Iso Catalog /23/99 9:20 PM Page 1

03.35580.Iso Catalog56-85 4/23/99 9:20 PM Page 1

03.35580.Iso Catalog56-85 4/23/99 9:20 PM Page 56 HI G H IN T E N S I T Y GA M M A RA Y SO U R C E S (HEG A N D HEGL SE R I E S) This group of sources includes gamma emitters with energies greater than 300 kev which are suitable for a variety of field uses including survey instrument calibration and industrial gauging applications. Two basic types are cataloged: the HEG series of point sources and the HEGL series of line sources. All source capsules are made of doubly encapsulated, welded 304 stainless steel. All sources have been assigned a classification number in accordance with ANSI N542.1977 and meet minimum standards for their application. Most capsules meet D.O.T. Special Form requirements. The active elements of the HEG point sources are ceramic unless otherwise indicated. Contained activity is normally held to within ±15% of the stated value unless quoted on a different basis. NIST traceability and output calibrations are available on request. The HEGL line sources may contain one of several forms of active material including ceramic, resin, or carbon substrates. All line sources are produced on a custom basis. Requests for quotations should include contained activity required, active and overall length, diameter limitations and uniformity requirements. Typical activities range up to 10 mci per cm and lengths to 80 cm. Uniformity is normally held to within ±15%, however, sources for medical application are prepared to a much tighter tolerance. Call customer service for information on specific models. Most sources are shipped in non-returnable D.O.T. 7A Type A containers. Certain products labeled with an asterisk require a wooden shipping container and lead insert. This container becomes the customer s property, and is suitable in most cases for permanent storage. There is an additional charge for this container. 3000 CAPSULE 3023 CAPSULE 3024 CAPSULE 3015 CAPSULE 3011 CAPSULE 3809 CAPSULE 3814 CAPSULE 3833 CAPSULE FIGURE 56-A HIGH INTENSITY GAMMA RAY SOURCES (HEG SERIES)

03.35580.Iso Catalog56-85 4/23/99 9:20 PM Page 57 HI G H IN T E N S I T Y GA M M A RA Y SO U R C E S (HEG A N D HEGL SE R I E S) Source capsules: Series 225: The model 225 capsule may be configured in several capsule geometries as shown in the following table. The standard Model 225 capsule is Catalog #3000. C A P S U L E O V E R A L L O V E R A L L ACTIVE LENGTH * A C T I V E N U M B E R L E N G T H D I A M E T E R D I A M E T E R 3000 0. 625 0. 250 0.030-0.090 0. 125 (Standard 225) (15.9 mm) (6.35 mm) (0.762-2.29 mm) (3.18 mm) 3015 0. 315 0. 236 0.030-0.090 0. 125 (8.00 mm) (5.99 mm) (0.762-2.29 mm) (3.18 mm) 3023 0. 473 0. 236 0.030"- 0.090 0. 125 (12.0 mm) (5.99 mm) (0.762-2.29 mm) (3.18 mm) 3024 0. 394 0. 236 0.030-0.090 0. 125 (10.0 mm) (5.99 mm) (0.762-2.29 mm) (3.18 mm) *Typical active length is 0.030 (0.762mm) Series 193: C A P S U L E O V E R A L L O V E R A L L ACTIVE LENGTH* A C T I V E N U M B E R L E N G T H D I A M E T E R D I A M E T E R 3011 1. 437 0.250 (0.635 mm) 0.030-0.090 0. 125 (Standard 193) (36.5 mm) 0.375 hex width (0.762-2.29 mm) (3.18 mm) (9.53 mm hex width) * Typical active length is 0.030 (0.762 mm) Additional Point Source Capsules: CAPSULE O V E R A L L O V E R A L L ACTIVE LENGTH* A C T I V E N U M B E R L E N G T H D I A M E T E R D I A M E T E R 3809 0.410" 0.108" N/A 0. 012 " (10.4 mm) (2.74 mm) (0.30 mm) 3814 0.200" 0. 060 " 0.110" 0. 030 " (5.08 mm) (1.52 mm) (2.8 mm) (0.76 mm) 3833 N/A 0.156" N/A 0. 012 " (3.96 mm) N/A (0.30 mm) Line Source Capsules: CAPSULE OVERALL O V E R A L L A C T I V E A C T I V E NUMBER L E N G T H DIAMETER LENGTH D I A M E T E R 3402 * 0.120" 1" - 33" 0. 0 6 0 " (3.05 mm) (25.4 mm-838 mm) (1.52 mm) 3321-1 * 0. 1 8 7 " 0.5-60" 0. 1 2 7 " (4.75 mm) (12.7 mm - 1.52 m) (3.23 mm) 3321-2 * 0.187" 0.5-60" 0. 1 2 7 " *Overall length per customer's specification. See drawings page 61. (4.75 mm) (12.7 mm - 1.52 m) (3.23 mm) To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 58 HI G H IN T E N S I T Y GA M M A RA Y SO U R C E S (HEG A N D HEGL SE R I E S) H E G Point Sources B a r i u m - 1 3 3 H a l f-l i f e : 10.57 y Principal gammas (kev): 81 (34.2%), 276 (7.09%), 303 (18.4%), 356 (62.2%), 384 (8.92%), OUTER CAPSULE WELD FIGURE 58-A 3000 CAPSULE (225 CAPSULE) Cs K x-rays: 30 (123%) 0.625" (15.9 mm) Radiochemical purity: 99% Cs-134 <0.5% Active element: R/h/Ci @ 1 m: Barium in ceramic or aluminum matrix. 0.24 (0.0024 Gy) CATALOG NUMBER m C i M B q H E G - 1 3 3-0 1 0. 1-0. 5 3. 7-1 8. 5 H E G - 1 3 3-1 1 3 7 0.250" (6.35 mm) INNER OUTER INNER CAPSULE ANSI 63333 D.O.T. SPECIAL FORM H E G - 1 3 3-5 5 1 8 5 H E G - 1 3 3-1 0 1 0 3 7 0 H E G L - 1 3 3 O R O R INNER CAPSULE 0.315" (8 mm) FUSION WELD FIGURE 58-B 3023 CAPSULE 0.236" (6 mm) ANSI 63333 D.O.T. SPECIAL FORM INNER 3-48 UNC-2B 0.156" (3.96 mm) OUTER CAPSULE OUTER 0.394" (10 mm) FUSION WELD FIGURE 58-C 3024 CAPSULE ANSI 63333 D.O.T. SPECIAL FORM 0.236" (6 mm) 0.125" (3.18 mm) OUTER INNER CAPSULE 0.090" (2.29 mm) INNER OUTER CAPSULE OUTER CAPSULE FIGURE 58-D 3015 CAPSULE 0.315" (8 mm) FUSION WELD OUTER 0.236" (6 mm) ANSI 63333 D.O.T. SPECIAL FORM INNER CAPSULE INNER

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 59 HI G H IN T E N S I T Y GA M M A RA Y SO U R C E S (HEG A N D HEGL SE R I E S) H E G Point Sources C e s i u m-1 3 7 H a l f-l i f e : Principal gamma (kev): 30.2 y 662 (85.2% from Ba-137m), Ba K x- rays: 27-31 (7%) Radiochemical purity: > 9 9 % Active element: R/h/Ci @ 1 m: CsCl in ceramic m a t r i x 0.33 (0.0033 Gy) CATALOG NUMBER m C i M B q H E G - 1 3 7-1 0. 1-1 3. 7-3 7 H E G - 1 3 7-5 5 1 8 5 H E G - 1 3 7-1 0 1 0 3 7 0 H E G - 1 3 7-2 0 2 0 7 4 0 H E G - 1 3 7-2 5 2 5 9 2 5 H E G - 1 3 7-3 0 3 0 1 1 1 0 H E G - 1 3 7-4 0 4 0 1 4 8 0 HEG-137-50 * 5 0 1 8 5 0 HEG-137-100 * 1 0 0 3 7 0 0 HEGL - 137 O R O R * Requires a shielded shipping container C o b a l t-6 0 H a l f-l i f e : 5.27 y Principal gammas (kev): 1173 (100%), 1333 ( 1 0 0 % ) Radiochemical purity: > 9 9 % Active element: R/h/Ci @ 1 m: Cobalt metal or CoCl in ceramic matrix 1.32 ( 0.0132 Gy) CATALOG NUMBER m C i M B q H E G - 6 0-1 0. 1-1 3. 7-3 7 HEG-60-5 * 5 1 8 5 HEG-60-10 * 1 0 3 7 0 H E G L - 6 0 O R O R * Requires shielded shipping container G e r m a n i u m - 68/G a l l i u m - 6 8 (For Use In Pet Scanners) H a l f - l i f e : 270.8 d/1.35 d Principal Gammas (kev): 511 (178%, annihilation peak) 1077 (3%) Radiochemical purity : > 9 9. 9 % Active element: R/h/Ci @ 1 m: HI G H IN T E N S I T Y GA M M A RA Y SO U R C E S (HEG A N D HEGL SE R I E S) S o d i u m - 2 2 Half-life: 2.60 y Principal Gammas (kev): 1274.5 99.94% 511 (178.8%, annihilation peak) Radiochemical purity: 99.9% Not determined Active element: R / h / C i @ 1 m: ceramic, epoxy or deposited 1.20 (0.012 Gy) (gamma only) CATALOG NUMBER m C i M B q H E G - 2 2 O R O R H E G L - 2 2 O R O R Not Determined ceramic or epoxy 0.52 (0.0052 Gy) CATALOG NUMBER m C i M B q H E G - 6 8 O R O R Refer to pages 39-42 for additional line source inform a t i o n. To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 60 HI G H IN T E N S I T Y GA M M A SO U R C E S (HEG A N D HEGL SE R I E S) OUTER 8-32 THD 0.3125" (7.94 mm) 0.0625" (1.59 m m) H O L E 0.875" (22.2 mm) MAX. LENGTH 1.5" (38.1 mm) HEX. WIDTH 0.375" (9.53 mm) 45 0.250" (6.35 m m ) INNER INNER CAPSULE OUTER CAPSULE ANSI 63333 D.O.T. SPECIAL FORM FIGURE 60-A 3011 CAPSULE (193 CAPSULE) CAPSULE E.B. WELD FIGURE 60-B 3814 CAPSULE 0.060" (1.52 mm) 0.200" (5.08 mm) 0.036 (0.91 mm) FIGURE 60-C 3833 CAPSULE EPOXY CAP 0.091" (2.31 mm) 0.12" (3.05mm) NORMAL DRILL ANGLE 0.156" (3.96 mm) 0.410" (10.4 mm) FUSION WELD FIGURE 60-D 3809 CAPSULE 0.108" (2.74 mm) 0.083" (2.11 mm) CAPSULE ANSI 32242

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 61 HI G H IN T E N S I T Y GA M M A SO U R C E S (HEGL SE R I E S) TYPE 304 STAINLESS STEEL TUBING INNER OUTER WELDS COLD WELDED ENDS 0.187" (4.75 mm) COPPER OR ALUMINUM TUBING 0.120" (3.05 mm) ANSI 43343 D.O.T. SPECIAL FORM FIGURE 61-B 3321 CAPSULE (Kr -85 GAMMA LINE SOURCE) FIGURE 61-A 3402 CAPSULE (301B LINE SOURCE) ALUMINUM MOUNTING BLOCK ALUMINUM OR COPPER TUBE PROTECTIVE GRID (OPTIONAL) MOUNTING HOLES FIGURE 61-C OPTIONAL HOLDER FOR Kr -85 LINE SOURCE FIGURE 61-D 3402 AND 3321 CAPSULES To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 62 BE T A SO U R C E S ( B F I SE R I E S) The BFI Series consists of three basic models: the BFI point sources, the BFIL line sources, the Micropoint beta sources. The Micropoint beta source s active element is only 0.118" (3 mm) in d i a m e t e r. 0.866" (22 mm) 0.837" (21.3 mm) MOUNTING HOLES COPPER PINCH-OFF The beta sources described below cover the energy range from 18 to 2282 kev, and are intended primarily for industrial gauging and for instrument calibration under field conditions. Except for the Kr-85 gas filled sources, the active element is a monolithic construction with the radionuclide incorporated into a ceramic pellet, a metallic foil or polymeric matrix. The element is further encapsulated to give a high integrity source in which the activity will not shift under the most extreme conditions likely to be encountered in field operation. The nuclides available in the 3200 series capsule have been tested in accordance with ANSI 64545. The Series 3200 capsules can also be furnished in an A-2F flanged mount. Some of the applications for these sources are: transmission gauging of thin sheet stock backscatter gauging of thin coatings aircraft ice detectors internal standards in portable survey instruments and control instrumentation high intensity point and line sources for calibration of beta spectrometers static elimination and other ionizing a p p l i c a t i o n s dust monitoring instruments hot particle studies. The various capsule styles available for these applications are pictured in the next section of this catalog. RING (OPTIONAL) Point Sources C a r b o n - 1 4 H a l f - l i f e : 5730 y Beta energy E M A X ( k e V ) : 156 All C-14 sources are prepared to order. Active diameters range from 0.118 to 0.787 (3 mm to 20 mm) with activities up to 10 mci/cm 2 (370 MBq/cm 2 ). The active deposit consists of a polymeric matrix covered with a 1-2 mg/cm 2 polyimide cover. K r y p t o n-85 Gas Sources BFI-85 Point Source H a l f - l i f e : 10.72 y Beta energy E M A X ( k e V ) : 6 8 7 The BFI-85 sources are all-welded stainless steel or titanium capsules loaded with Kr-85 gas and supplied in the 3320 capsule. Enrichment is usually about 6%, corresponding to 60 mci/cc (2.22 GBq/cc) @ STP. Contained activity is supplied as a nominal value ±15%. Information on higher enrichments of Kr-85 available on r e q u e s t. WINDOW BODY WELD ALL AROUND CAP FIGURE 62-A 3320 CAPSULE (K r- 8 5 ) FIGURE 62-B 3320 CAPSULE (K r- 8 5 ) S p e c i f i c a t i o n s : Capsule type: 3 3 2 0 Capsule pressure: approximately 100 psig m a x i m u m Overall diameter: 0.866 (22.0 mm) Overall length: 0.837 (21.3 mm) Capsule material: 304 stainless steel (1) Active diameter: Window: 0.670 (17.0 mm) 0.002 (0.0508 mm) stainless steel or titanium CATALOG A C T I V I T Y ACTIVITY N U M B E R ( m C i ) ( G B q ) B F I - 8 5-2 2 0. 0 7 4 B F I - 8 5-1 0 1 0 0. 3 7 0 B F I - 8 5-2 5 2 5 0. 9 2 5 B F I - 8 5-5 0 5 0 1.85 B F I - 8 5-1 0 0 1 0 0 3.7 B F I - 8 5-1 5 0 1 5 0 5. 5 5 B F I - 8 5-2 0 0 2 0 0 7.4 B F I - 8 5-3 0 0 3 0 0 1 1. 1 B F I - 8 5-4 0 0 4 0 0 14.8 (1) Titanium capsule available on request

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 63 BE T A SO U R C E S (BFI SE R I E S) Kr-85 Beta Line Sources (BFIL-85) Capsule No. 3311-1 - Copper tubing Capsule No. 3311-2 - Aluminum tubing Beta Line Sources are available in lengths from 0.25 to 25 (6.35 mm to 635 mm) with loading up to 1 mci/cm (37 MBq/cm) of Kr-85 at normally available enrichments. Contained activity is held to within ±15% of the nominal value. COLD WELDED ENDS The shorter length sources are useful as internal check sources for portable survey instruments, while longer sections have applications in static elimination and process thickness gauging of various plastic sheets. Tubing is 0.062 diameter x 0.003 wall (1.57 mm x.076 mm) copper or 0.092 diameter x 0.005 (2.34 mm x 0.127 mm) aluminum, depending on the application. The ends are sealed by cold welding techniques. Sources can be furnished fabricated or mounted in holders per the user s specifications. N i c k e l-6 3 The BFI-63 active element is high specific activity nickel-63 electrodeposited on a polished copper disk 0.01 (0.254 mm) thick. Other foils and special shapes are available on request. H a l f - l i f e : Beta energy E M A X ( k e V ) : 66 100 y C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) B F I - 6 3-0 1 0. 1 3. 7 B F I - 6 3-0 5 0. 5 1 8. 5 B F I - 6 3-1 1 3 7 B F I - 6 3-5 5 1 8 5 Capsule Type: Custom designs Higher activities in different capsules are available on r e q u e s t. 0.125" (3.18 mm) P r o m e t h i u m-1 4 7 The BFI-147 active element consists of an insoluble promethium salt in a ceramic matrix with a thin nickel window or on polymeric membrane. H a l f - l i f e : Beta energy E M A X ( k e V ) : 2.62 y 225 A significant amount of Bremsstrahlung (x-ray) radiation is emitted by shielding m a t e r i a l s. C A T A L O G A C T I V I T Y A C T I V I T Y A C T I V E N U M B E R ( m C i ) ( M B q ) D I A M E T E R B F I - 147-05 0. 5 18. 5 0. 12-0. 25 3.05-6.35 mm B F I - 1 4 7-1 1 3 7 0.25 6.35 mm B F I - 1 4 7-5 5 1 8 5 0.25 6.35 mm B F I - 1 4 7-1 0 1 0 3 7 0 0.25 6.35 mm Capsule type: Custom designs Higher activities are available on request. COPPER OR ALUMINUM TUBING FIGURE 63-A CAPSULE NO. 3311 R u t h e n i u m - 1 0 6 / R h o d i u m - 1 0 6 Kr -85 BETA LINE SOURCE The BFI-106 active element is a ceramic disk or metallic pellet encapsulated in a welded 3203* (GFS series) capsule with a 0.002 (0.0508 mm welded stainless steel window. H a l f-life: 1.02 y Beta energy E M A X (kev): 39 from Ru-106, 354 from Rh-106. Significant gamma radiation in the range 512-156 kev is emitted by R h - 1 0 6. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) B F I - 1 0 6-0 1 0. 1 3. 7 B F I - 1 0 6-0 5 0. 5 1 8. 5 B F I - 1 0 6-1 1 3 7 B F I - 1 0 6-2 2 7 4 B F I - 1 0 6-5 5 1 8 5 Active Diameter: 0.19 (4.83 mm) Capsule type: 3203 (GFS Series) *3203 is equivalent to the GFS-3 capsule with a 0.002 ss window. To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 64 BE T A SO U R C E S (BFI SE R I E S) S t r o n t i u m-9 0 / Y t t r i u m - 90 The BFI-90 active element is an insoluble strontium salt dispersed in a ceramic matrix. Contained activity is supplied as a nominal value ±15% NIST calibration (±11% at the 99% confidence level) of the contained activity is available on request. Sr-90/Y-90 is also available in a titanium capsule, Model 3712, which may be supplied with a 6 handle for easy m a n i p u l a t i o n. Versions of the 3203 (GFS Series) capsule with smaller active diameters are available on special order. H a l f-l i f e : 28.5 y Beta energies E M A X (kev): 554 from Sr-90, 2274 from Y-90. A significant amount of Bremsstrahlung ( x-ray) radiation is emitted by shielding m a t e r i a l s. Micropoint beta point sources (BFIM) These sources are primarily designed for use in commercial beta backscatter gauges requiring an extremely small point source of beta radiation (0.012", 0.3 mm). In addition to beta backscatter, typical applications include hot particle standards, mapping detector sensitivities, and transmission thickness gauging. These sources are registered with the State of California as Model TCB-1 and have an ANSI classification of C32232. C A T A L O G N U C L I D E C A P S U L E W I N D O W O U T S I D E E M A X (k e V) ACTIVITY RANGE N O M A T E R I A L M A T E R I A L D I A M E T E R B F I M-090 Sr-90/Y-90 P t / I r 2.2 mg/cm 2 Ti 0.050" (1.27 mm) 2280 up to 25 µci (925 kbq) B F I M-147 Pm-147 N i c k e l 2.0 mg/cm 2 Ni 0.022" (0.559 mm) 240 up to 1200 µci (44.4 MBq) B F I M-204 Ti-204 P t / I r 2.2 mg/cm 2 Ti 0.022" (0.559 mm) 763 up to 100 µci (3.7 MBq) C A T A L O G N U M B E R ACTIVITY ACTIVITY B F I - 9 0-1 1 µci 37 kbq B F I - 9 0-1 0 10 µci 370 kbq B F I - 9 0-2 5 25 µci 925 kbq B F I - 9 0-5 0 50 µci 1.85 MBq B F I - 9 0-1 0 0 100 µci 3.7 MBq B F I - 9 0-5 0 0 500 µci 18.5 MBq B F I - 9 0-1 M 1 mci 37 MBq B F I - 9 0-2 M 2 mci 74 MBq B F I - 9 0-5 M 5 mci 185 MBq B F I - 9 0-1 0 M 10 mci 370 MBq B F I L - 9 0 O R O R Active diameter: 0.250 (6.35 mm) Capsule: 3203* (GFS Series) *3203 is equivalent to the GFS-3 capsule with a 0.002 ss window. FIGURE 64-A BFIL-85 AND BFIM SOURCES EPOXY SEAL 0.050" (1.27mm) DIA. 0.053 (1.35mm) 0.180" (4.57 mm) FIGURE 64-B BFIM SERIES POINT SOURCE Sr- 9 0 WINDOW BODY 0.075 (1.91mm) 0.100 (2.54mm) 0.180" (4.57 mm) 0.014" (0.356 mm) WINDOW ACTIVE DIAMETER 0.022 (0.559mm EPOXY IN PLACE EPOXY FILL FIGURE 64-C BFIM SERIES POINT SOURCE Pm-147 AND Tl- 2 0 4

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 65 LO W EN E R G Y X - RA Y AN D GA M M A RA Y SO U R C E S Source Configurations ( XFB & GFS Series) This series of radiation sources is rugged capsule configurations intended primarily for XRF and gauging applications in the field requiring photon energies from 6 to 125 kev. GFS Series Configurations Two basic point source styles are utilized: The GFS series is an all stainless steel configuration and is normally used for energies from 60-125 kev. The XFB series capsule which is fitted with a high temperature brazed beryllium window and is employed for emissions below 50 kev. Both series have been expanded and assigned new 3000 series numbers to accommodate a large combination of window and backing materials which optimize emission characteristics. Most source configurations have been tested and assigned ANSI classifications. Some sources are classified as D.O.T. Special Form. C A P S U L E W I N D O W S P A C E R A C T I V E O V E R A L L O V E R A L L REGISTERED UNDER D. O. T. N U M B E R (STAINLESS STEEL) D I A M E T E R D I A M E T E R L E N G T H S E R I E S SPECIAL FORM 3201 0. 010 N o n e 0.210 0. 312 0. 2 G F S - 3 Y e s (Standard Capsule) ( 0. 254 m m ) (5.33 mm) (7.92 mm) (5.08) mm 3202 0. 010 T u n g s t e n 0. 210 0. 312 0. 2 G F S - 3 Yes (0.254 mm) (5.33 mm) (7.92 mm) (5.08) mm 3203 0. 002 A l u m i n u m 0. 250 0. 312 0. 2 G F S - 3 Y e s (0.0508 mm) (6.35 mm) (7.92 mm) (5.08) mm 3217 0. 010 N o n e 0. 447 0. 5 0. 2 G F S - 5 No (0.254 mm) (11.4 mm) (12.7 mm) (5.08) mm 3222 0. 002 N o n e 0. 187 0.375 0. 310 N o t Y e s (0.0508 mm) (4.75 mm) (9.53 mm) (7.87 mm) R e g i s t e r e d 3224-1 0. 010 N o n e 0. 080 0. 118 0. 394 G F S - 3 Yes (0.254 mm) (2.03 mm) (3 mm) (10 mm) 3224-2 0. 010 N o n e 0. 120 0. 157 0. 394 G F S - 3 Y e s (0.254 mm) (3.05 mm) (3.99 mm) (10 mm) 3224-3 0. 010 N o n e 0. 187 0. 275 0. 394 G F S - 3 Y e s (0.254 mm) (4.75 mm) (6.99 mm) (10 mm) 3807 0. 010 N o n e 0. 035 0. 120 0. 4 G F S - 3 Y e s (0.254 mm) (0.889 mm) (3.05 mm) (10.2 mm) All capsules can be furnished in the auxiliary type A-2F flanged holder shown on Page 66, which provides a convenient means of mounting in an instrument or device. 3201 CAPSULE 3203 CAPSULE 3222 CAPSULE 3807 CAPSULE 3217 CAPSULE 3215 CAPSULE 3204 CAPSULE FIGURE 65-A XFB AND GFS SERIES Also included are a series of line sources suitable for use in gauging with energies 60 kev and higher. XFB and GFS Capsules This line of sources uses a variety of window and backing materials to maximize critical emissions through the window end of the source and, if desired, reduce emissions from the back end. This type of integral shielding can simplify external holder and shielding assemblies. Contact Technical Customer Service for further i n f o r m a t i o n.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 66 LO W EN E R G Y X - RA Y AN D GA M M A RA Y SO U R C E S (GFS SE R I E S CO N F I G U R A T I O N S) 0.200" (5.08 mm) 0.01" (0.254 mm) FUSION WELD CAPSULE INTEGRAL WINDOW.010" 0.200" (5.08 mm) ACTIVE ELEMENT 0.312" (7.92 mm) 0.312" (7.92 mm) INTEGRAL WINDOW D.O.T. SPECIAL FORM ACTIVE ELEMENT SHIELD TUNGSTEN ALLOY CAPSULE D.O.T. SPECIAL FORM 0.200" (5.08 mm) FUSION WELD FIGURE 66-A 3201 CAPSULE (GFS-3) FIGURE 66-B 3202 CAPSULE 0.394" (10 mm) FUSION WELD 0.312" (7.92 mm) A DIA B DIA D.O.T. SPECIAL FORM D.O.T. SPECIAL FORM ACTIVE WELD A B 01 0.118"(3.0 mm) 0.080"(2.03 mm) 02 0.157"(3.99 mm) 0.120"(3.05 mm) 03 0.275"(6.99 mm) 0.187"(4.75 mm) FIGURE 66-C 3224 CAPSULE FUSION WELD CAPSULE ALUMINUM SHIELD.002 (0.051 mm)st. STL WINDOW FIGURE 66-D 3203 CAPSULE GFS-3 WITH 0.002" SS WINDOW 0.310" (7.87 mm) CAPSULE 0.375" (9.53 mm) 0.200" (5.08 mm) 0.328 (8.33 mm) ACTIVE ELEMENT STD. HEX SOCKET 0.156"(3.96mm) ACROSS FLATS E.B.WELD D.O.T. SPECIAL FORM WINDOW 0.010" (.254 mm) 0.447" (11.4 mm) 0.500" (12.7 mm) E.B. WELD 0.002" (.051 mm) ST.STL. WINDOW 304 ST. STL. FIGURE 66-F 3217 CAPSULE (GFS-5) FIGURE 66-E 3222 CAPSULE (343 THREADED CAPSULE) 1.0" (25.4 mm) CAPSULE 304 ST STL WELD 0.562" (14.3 mm) 0.120" (3.05 mm) 0.400" (10.2 mm) CLEARANCE FOR NO. 6 SCREW 0.562" (14.27 mm) O.D. 0.030" (.76 mm) D.O.T. SPECIAL FORM 0.250" (6.35 mm) FIGURE 66-G 3807 CAPSULE 0.125" (3.18 mm) 0.75" (19.1 mm) FIGURE 66-H A2F FLANGE MOUNT

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 67 LO W EN E R G Y X - RA Y AN D GA M M A RA Y SO U R C E S XFB Series Configurations C A P S U L E W I N D O W S P A C E R ACTIVE OVERALL O V E R A L L R E G I S T E R E D D. O. T. N U M B E R ( B E R Y L L I U M ) D I A M E T E R D I A M E T E R L E N G T H U N D E R S P E C I A L S E R I E S F O R M 3204 0. 010 N o n e 0. 2 0. 312 0. 2 X F B - 3 Yes (0.254 mm) (5.08 mm) (7.93 mm) (5.08 mm) 3205 0.040 T u n g s t e n 0. 2 0. 312 0. 2 X F B - 3 Y e s (1.02 mm) (5.08 mm) (7.93 mm) (5.08 mm) 3215 0. 010 N o n e 0. 437 0. 5 0.2 X F B - 5 N o (0.254 mm) (11.1 mm) (12.7 mm) (5.08 mm) 0.200" (5.08 mm) FUSION WELD TUNGSTEN SPACER WINDOW 0.040" Be FOIL 0.200" (5.08 mm) 0.312" (7.92 mm) 0.200" (5.08 mm) 0.312" (7.92mm) D.O.T. SPECIAL FORM WINDOW.010" Be FOIL D.O.T. SPECIAL FORM CAPSULE 0.200" (5.08 mm) CAPSULE FIGURE 67-A 3204 CAPSULE (XFB-3) FIGURE 67-B 3205 CAPSULE WELD CAPSULE 0.200 (5.08 mm) 0.500" (12.7 mm) Be WINDOW 0.010" (0.25 mm) FIGURE 67-C 3215 CAPSULE (XFB-5) Some important features of the 3204, 3205 and 3215 (XFB-5) capsule are: Beryllium windows provide excellent transmission for energies below 50 kev. Sealing by high temperature brazing provides reliability and safety by having an all-m e t a l c o n s t r u c t i o n. The monolithic construction of the active element provides an additional safety factor in case of window failure and assures that the radioactivity does not shift once the source has been installed. The 3204 and the 3205 (XFB-3) capsules have been tested and registered in accordance with ANSI classifications for sealed gauging sources. Sources are also classified with the D.O.T. as Special Form. All sources are suitable for use under high vacuum conditions.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 68 LO W EN E R G Y X - RA Y AN D GA M M A RA Y SO U R C E S Point Sources (PHI) C o b a l t-57 I r o n-5 5 Half-life: 272 d Half-life: 2.74 y Photon energies (kev): Photon energies (kev): 14 (9.54%), 122 (85.5%), 136.5 (10.7%), 5.9-6.5 (27.3%) Mn K x-r a y s 6-7 (54.7%) Fe K x-rays C a d m i u m-1 09 Half-life: 1.27 y Photon energies (kev): 88 (3.6% from Ag-109m daughter), 21-26 (99.8%) Ag K x- r a y s Active element: Elemental iron plated on 0.005 (0.127 mm) thick nickel substrate. Accelerator grade Fe-55 may be available. Contact Technical Customer Service for more information. Photon output: Approximately 8.04 x 10 5 p h o t o n s / s / s t e r a d i a n per mci. Contained activity is supplied as a nominal value ±15%. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 5 5-1 1 3 7 P H I - 5 5-2 2 7 4 P H I - 5 5-5 5 1 8 5 P H I - 5 5-1 0 1 0 3 7 0 P H I - 5 5-2 0 2 0 7 4 0 P H I - 5 5-2 5 2 5 9 2 5 P H I - 5 5-4 0 4 0 * 1 4 8 0 P H I - 5 5-5 0 50 * 1 8 5 0 P H I - 5 5-7 5 75 * 2 7 7 5 P H I - 5 5-1 0 0 100 * 3 7 0 0 Active Diameter: 0.197 (5.00 mm) Capsule type: 3204 * Contained activity. Self absorption will decrease the output activity. The transmission through the beryllium window is 88% Active element: Elemental cobalt plated on 0.005 (0.127 mm) thick nickel substrate or incorporated into a ceramic element. R a d i o p u r i t y : 99% (Co-56 and Co-58 are <0.2% at the time of shipment). Please contact Technical Customer Service for information on a specific lot. Photon output: Approximately 2.5 x 10 6 (122 and 136 kev) photons/s/steradian per mci. Contained activity is supplied as a nominal value ±15%. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 5 7-0 5 0. 5 1 8. 5 P H I - 5 7-1 1 3 7 P H I - 5 7-2 2 7 4 P H I - 5 7-5 5 1 8 5 P H I - 5 7-1 0 1 0 3 7 0 P H I - 5 7-1 5 1 5 5 5 5 P H I - 5 7-2 5 2 5 9 2 5 P H I - 5 7-4 0 4 0 1 4 8 0 P H I - 5 7-5 0 5 0 1 8 5 0 P H I - 5 7-7 5 7 5 2 7 7 5 P H I - 5 7-1 0 0 1 0 0 3 7 0 0 P H I L - 5 7 O R O R Capsule Type: 3201 Active Diameter: 0.250 (6.35 mm) Capsule type: 3204 Active Diameter 0.197" (5.0 mm) Active elements: Elemental cadmium plated on 0.005 (0.127 mm) thick silver substrate or deposited on a ceramic matrix. Radiopurity: 99% (The emissions greater than 100 kev are approximately 0.2% of the 88 kev emissions. These impurities are from Zn-65, Rh-102, Cd 115m and Cd-113m). Contact Technical Customer Service for additional information. Photon output: Approximately 2.5 x 10 6 22 kev photons/s/stera dian per mci. Contained activity is supplied as a nominal value ±15%. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 1 0 9-0 5 0. 5 1 8. 5 P H I - 1 0 9-1 1 3 7 P H I - 1 0 9-2 2 7 4 P H I - 1 0 9-3 3 1 1 1 P H I - 1 0 9-5 5 1 8 5 P H I - 1 0 9-1 0 1 0 3 7 0 P H I - 1 0 9-1 5 1 5 5 5 5 P H I - 1 0 9-2 5 2 5 9 2 5 P H I - 1 0 9-5 0 5 0 1 8 5 0 P H I - 1 0 9-1 0 0 1 0 0 3 7 0 0 Active Diameter: 0.197 (5.00 mm) Capsule type: 3204 or 3205

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 69 LO W EN E R G Y X - RA Y AN D GA M M A RA Y SO U R C E S Point Sources (PHI) G a d o l i n i u m-1 5 3 Half-life: 242 d Photon energies (kev): 97 (27.6%), 103 (19.6%), 41-49 (120%) Eu K x-r a y s ) Active element: Gadolinium oxide bound in a ceramic matrix Radiopurity: >99% (Eu-152<0.01%) Photon output: Approximately 7 x 10 5 p h o t o ns /s/steradian per mci (97 kev). Contained activity is supplied as a nominal value ±15%. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 1 5 3-1 1 3 7 P H I - 1 5 3-5 5 1 8 5 P H I - 1 5 3-1 0 1 0 3 7 0 P H I - 1 5 3-5 0 5 0 1 8 5 0 P H I - 1 5 3-1 0 0 1 0 0 3 7 0 0 P H I L - 1 5 3 O R O R Active Diameter: 0.210 (5.33mm) Capsule type: 3201 Other nuclides such as Iodine-125 are available on request. E u r o p i u m - 1 5 5 Half-life: 4.96 y Photon energies (kev): 86.5 (34%), 105.3 (20.6%), Gd K x-rays 43-50 kev (25.3%) Active Element: Europium oxide in ceramic m a t r i x Radiopurity: 99% Photon output: ~7 x 10 6 photons/s/steradian per mci at 87 kev. A m e r i c i u m-2 4 1 Half-life: 433 y Photon energies (kev): 60 (36%), >100 (0.0306%), 12-21 (39.5%) Np L x-r a y s Active element: Americium oxide bound in ceramic or aluminum matrix Radiopurity: >99% Photon output: Approximately 8 x 10 5 p h o t o ns/s/steradian per mci (60 kev) unless otherwise specified. Contained activity is supplied as a nominal value ±15%. A m-241 is normally supplied in the 3201 capsule for applications requiring only the 60 kev gamma emission. For situations requiring the low energy x-r a y s, Am-241 is available in the 3204 capsule fitted with a 0.01 (0.254 mm) beryllium window. Because of self-absorption only low activities are useful in this configuration. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 2 4 1-0 1 0. 1 3. 7 P H I - 2 4 1-0 5 0. 5 1 8. 5 P H I - 2 4 1-1 1 3 7 P H I - 2 4 1-2 2 7 4 P H I - 2 4 1-5 5 1 8 5 P H I - 2 4 1-1 0 1 0 3 7 0 P H I - 2 4 1-2 0 2 0 7 4 0 Active diameter: 0.210 (5.33 mm) Capsule type: 3201 C u r i u m-244 Half-life: 18.1 y Photon energies (kev): 12-213 (approximately 9%) Pu L x-rays Active element: Curium oxide plated on 0.005 (0.127 mm) thick platinum-clad nickel substrate or deposited onto a ceramic matrix. Radiopurity: <0.005% photons >100 kev Photon output: Approximately 1 x 10 6 p h o t o ns /s/steradian per mci (18 kev). Contained activity is supplied as a nominal value ±15%. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 2 4 4-1 1 3 7 P H I - 2 4 4-5 5 1 8 5 P H I - 2 4 4-1 0 1 0 3 7 0 Active Diameter: 0.197 (5.00 mm) Capsule type: 3204 C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) P H I - 1 5 5-1 1 3 7 P H I - 1 5 5-5 5 1 8 5 P H I - 1 5 5-1 0 1 0 3 7 0 Active Diameter: 0.210 (5.33 mm) Capsule type: 3201

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 70 AN N U L A R SO U R C E SY S T E M S FO R X - RA Y FL U O R E S C E N C E (XRF) SP E C T R O S C O P Y (AN SERIES) The annular radionuclide sources assemblies provide a convenient form of low energy monochromatic x-rays for use with modern analytic spectroscopy systems. The annular geometry provides the most efficient method of fluorescing the sample, and compensating for irregularities in sample positions and uniformity. Each model has been designed to give optimum performance as well as freedom from secondary radiations arising from materials of construction. This is accomplished by using selected shielding and filter materials built into the assembly. All assembly designs have been tested in accordance with ANSI N542 1977 and have been assigned classification C33232. A m e r i c i u m-241 sources are also registered as D.O.T. Special Form as defined in 49CFR173.398. This allows shipment in simple, non-returnable cardboard containers, a distinct advantage when the source is part of a more complex system. Contained activity for all XRF sources is supplied as a nominal value ±15%. Two basic types of assemblies are available: AN Reloads (AN-REL) New sources will be loaded into customersupplied source assemblies and the depleted sources will be accepted for disposal. To reduce customer downtime, Isotope Products will request delivery of the depleted source assembly when the replacement sources have been manufactured. In the case of Am-241/Cd-109 Composite Sources the reload service includes a soak test of the existing Am-241 source. 2 50" (63.5 mm) COVER PREFFERED P R E F F E R E D N U C L I D E ELEMENT RANGES ELEMENT RANGES K - L I N E S L - L I N E S C d - 1 0 9 C h r o m i u m - M o l y b d e n u m T e r b i u m - U r a n i u m C o - 57 T i t a n i u m - S e l e n i u m, L a n t h a n u m - L e a d H o l m i u m - U r a n i u m A m - 2 4 1 Z i n c - N e o d y m i u m H a f n i u m - U r a n i u m F e - 5 5 S i l i c o n - V a n a d i u m N i o b i u m - C e r i u m C m - 2 4 4 T i t a n i u m - S e l e n i u m L a n t h a n u m - L e a d G d - 153 I r o n - T e l l u r i u m S a m a r i u m - L e a d E r b i u m - L e a d E u - 155 I r o n - T e l l u r i u m C e r i u m - L e a d S a m a r i u m - L e a d LEAD INSERT RETAINING RING Series AN provides for direct irradiation of the sample. Series ANT is a source-target system 1.375" (34.9 mm) 1.125" (28.6 mm) TORUS CELL PLATE AN-109 ASSEMBLY BODY AN Series Sources (AN) The active elements of Fe-55, Cd-109 and C o-57 are prepared by electrodeposition of the metal on an annular substrate and sealed with a bonded beryllium window. The active elements of Am-241 and Eu-155 are prepared as a series of ceramic disks or aluminum pellets arranged in an annular configuration. All AN sources are designed to be furnished in the series AND holders described below. Geometries using tungsten shielding are available. Arrangements can be made to fabricate holders to custom designs. WASHER FIGURE 70-A AN SOURCE IN AND HOLDER

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 71 AN N U L A R SO U R C E SY S T E M S FO R X - RA Y FL U O R E S C E N C E (XRF) SP E C T R O S C O P Y I r o n-5 5 H a l f-life: 2.73 y Photon energies (kev): 5.9-6.5 (27.3%) Mn K x-r a y s The active element consists of elemental iron electroplated and diffusion bonded onto a 0.010 (0.254 mm) thick nickel annulus covered with a 0.010 (0.254 mm) annular beryllium window. For transport and storage protection Isotope Products recommends purchase of the AND-3 holder. Accelerator-produced Fe-55 [1,000-2, 0 0 0 mci/mg iron (37-74 GBq/mg iron)] is sometimes available. Call the Sales Department for more information and availability. CAPSULE ACTIVE FOIL 0.3125" (7.94 mm) ANSI 33232 SPECIAL FORM MATERIAL Be WINDOW 2.020" (51.3 mm) 0.375" (9.53 mm) 99% PURE TIN LINER FIGURE 71-A AN-109 1.180" (30 mm) 0.375" (9.53 mm) BERYLLIUM WINDOW RING E.B.WELD ANSI 32232 C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) A N - 5 5-5 5 1 8 5 A N - 5 5-1 0 1 0 3 7 0 0.105" (2.67 mm) 12 S FIGURE 71-B AN-241 A N - 5 5-2 5 2 5 9 2 5 A N - 5 5-5 0 5 0 1 8 5 0 A N - 5 5-7 5 7 5 2 7 7 5 ANSI 32232 1.5" (38.1 mm) MAX 0.5" (12.7 mm) 0.010" (0.254 mm) BERYILLUM COVER BONDED TO FOIL A N - 5 5-1 0 0 1 0 0 3 7 0 0 C o b a l t - 5 7 0.020" (0.508 mm) RADIOACTIVE MATERIAL BONDED TO FOIL 0.01" (0.254 mm) NICKEL FOIL H a l f-life: 272 d FIGURE 71-C AN-55 Photon energies (kev): 14 (9.54%), 122 (85.5%), 136.5 (10.7%), 6-7 (54.7%) Fe K x-r a y s The active element (option 1) consists of metallic cobalt electroplated and diffusion bonded onto a nickel annulus and covered with a 0.010 (0.254 mm) beryllium window or (option 2) the active element consists of a series of ceramic or aluminum disks approximately, 0.128 (3.25 mm) in diameter, arranged in an annular configuration and sealed in a welded stainless steel capsule. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) A N - 5 7-5 5 1 8 5 A N - 5 7-1 0 1 0 3 7 0 A N - 5 7-2 5 2 5 9 2 5 A N - 5 7-5 0 5 0 1 8 5 0 A N - 5 7-7 5 7 5 2 7 7 5 A N - 5 7-1 0 0 1 0 0 3 7 0 0 Additional nuclides, including Cm-244, Gd-1 5 3, and I-125, are available on request.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 72 AN N U L A R SO U R C E SY S T E M S FO R X - RA Y FL U O R E S C E N C E (XRF) SP E C T R O S C O P Y C a d m i u m - 1 0 9 Half-life: 1.27 years Photon energies (kev): 88 (3.6% from Ag-109 daughter), 21-26 (99.8%) Ag K x-rays The active element consists of metallic cadmium electroplated on a silver annulus and covered with a bonded 0.01 (0.254 mm) beryllium window. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) A N - 1 0 9-2 2 7 4 A N - 1 0 9-5 5 1 8 5 A N - 1 0 9-1 0 1 0 3 7 0 A N - 1 0 9-2 5 2 5 9 2 5 A N - 1 0 9-3 0 3 0 1 1 1 0 A N - 1 0 9-4 0 4 0 1 4 8 0 A N - 1 0 9-5 0 5 0 1 8 5 0 A N - 1 0 9-7 5 7 5 2 7 7 5 A N - 1 0 9-1 0 0 1 0 0 3 7 0 0 A m e r i c i u m - 2 4 1 H a l f-life: 433 y Photon energies (kev): 60 (36%), 12-21 (39.5%) Np L x-rays The active element consists of a series of ceramic or aluminum disks approximately, 0.128 (3.25 mm) in diameter, arranged in an annular configuration and sealed in a welded stainless steel capsule. C A T A L O G A C T I V I T Y A C T I V I T Y N U M B E R ( m C i ) ( M B q ) A N - 2 4 1-5 5 1 8 5 A N - 2 4 1-1 0 1 0 3 7 0 A N - 2 4 1-2 5 2 5 9 2 5 A N - 2 4 1-5 0 5 0 1 8 5 0 A N - 2 4 1-1 0 0 1 0 0 3 7 0 0 Source Holder Assembly (AND Series) AND holders provide a convenient and safe method for storing and using the AN series sources for direct irradiation of a target specimen Specifications: Central hole diameter: 0. 3 7 5 (9.53 mm Overall diameter: 2. 5 0 (63.5 mm Inside diameter: 2. 0 0 (50.8 mm Active annulus diameter: 0. 7 5 (19.1 mm C A T A L O G S H I E L D I N G R E C O M M E N D E D N U M B E R M A T E R I A L N U C L I D E S A N D - 1 L e a d Am-241, Co-57, Gd-153, Eu-155 A N D - 2 T i n Cd-109, I-125 A N D - 3 N i c k e l Fe-55 only plated brass S P E C I M E N SOURC DETECTOR FIGURE 72-B SERIES AND HOLDER A N D - 3 A N D - 1 A N D - 2 FIGURE 72-A ANNULAR SOURCE HOLDER ASSEMBLIES To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 73 AN N U L A R SO U R C E SY S T E M S FO R X - RA Y FL U O R E S C E N C E (XRF) SP E C T R O S C O P Y ANT Series The ANT Series is a source target system designed primarily for use with Am-241 and a variety of replaceable targets. ANT sources are useful for exciting the characteristic x-rays of a target material. The active element is an array of six equally spaced 3201 capsules placed in a shielded assembly. Specifications: Central hole diameter: Overall diameter: Inside diameter: Shielding material: 0.375 (9.53 mm) 2.50 (63.5 mm) 2.00 (50.8 mm) l e a d The source-holder assembly includes a 50 or 100 mci (1.85 or 3.7 GBq) Am-241 source. Targets are available as a separate option. Contained activity is supplied as a nominal value ± 1 5 %. Other nuclides are available on request. ANT Targets The TR series of x-ray fluorescence targets is designed to be used with the Series ANT annular source-holder assembly. The target consists of an annular aluminum cup containing the target element in the form of a pure metallic foil, powdered metal, or metal oxide dispersed in a pure acrylic binder. All materials used are of the highest commercially available purity. The targets listed in the table include elements from Z=26 through Z=69, and are suitable for use with Am-241 and Cd-109 excitation sources. Other target elements are available on r e q u e s t. SOURCE TARGET S P E C I M E N DETECTOR FIGURE 73-A SERIES ANT HOLDER MODEL E L E M E N T CHEMICAL N U M B E R F O R M T R - 4 B e r y l l i u m F o i l TR-5 B o r o n P o w d e r T R - 6 P o l y p r o p y l e n e S h e e t T R - 6 A G r a p h i t e F o i l T R - 7 P o l y i m i d e S h e e t T R - 8 M y l a r S h e e t T R - 9 T e f l o n S h e e t T R - 1 2 M a g n e s i u m P o w d e r T R - 3 A l u m i n u m F o i l T R - 1 4 S i l i c o n P o w d e r T R - 1 5 Phosphorus Nitrate P o w d e r T R - 1 6 S u l f u r P o w d e r T R - 1 7 Polyvinyl Chloride S h e e t T R - 2 0 Calcium Carbonate P o w d e r T R - 2 1 S c a n d i u m P o w d e r T R - 2 2 T i t a n i u m F o i l T R - 2 3 V a n a d i u m F o i l T R - 2 4 C h r o m i u m P o w d e r T R - 2 5 M a n g a n e s e P o w d e r T R - 2 6 I r o n F o i l T R - 2 7 C o b a l t F o i l T R - 2 8 N i c k e l P o w d e r T R - 2 9 C o p p e r F o i l T R - 3 0 Z i n c F o i l T R - 3 1 G a l l i u m P o w d e r T R - 3 2 G e r m a n i u m P o w d e r T R - 3 3 A r s e n i c P o w d e r T R - 3 4 S e l e n i u m P o w d e r T R - 4 0 Z i r c o n i u m F o i l T R - 4 1 N i o b i u m F o i l T R - 4 2 M o l y b d e n u m M e t a l T R - 4 4 R u t h e n i u m P o w d e r T R - 4 5 R h o d i u m P o w d e r MODEL E L E M E N T CHEMICAL N U M B E R F O R M T R - 4 6 P a l l a d i u m F o i l T R - 4 7 S i l v e r F o i l T R - 4 8 C a d m i u m P o w d e r T R - 4 9 I n d i u m F o i l T R - 5 0 T i n F o i l T R - 5 1 A n t i m o n y P o w d e r T R - 5 2 T e l l u r i u m P o w d e r T R - 5 6 B a r i u m P o w d e r T R - 5 7 Lanthanum P o w d e r T R - 5 8 C e r i u m P o w d e r T R - 5 9 P r a s e o d y m i u m P o w d e r T R - 6 0 N e o d y m i u m P o w d e r T R - 6 2 S a m a r i u m P o w d e r T R - 6 3 E u r o p i u m P o w d e r TR-64 G a d o l i n i u m P o w d e r T R - 6 5 T e r b i u m P o w d e r T R - 6 6 D y s p r o s i u m P o w d e r T R - 6 7 H o l m i u m P o w d e r T R - 6 8 E r b i u m P o w d e r T R - 6 9 T h u l i u m P o w d e r T R - 7 0 Y t t e r b i u m P o w d e r T R - 7 1 L u t e t i u m P o w d e r T R - 7 2 H a f n i u m F o i l T R - 7 3 T a n t a l u m F o i l T R - 7 4 T u n g s t e n F o i l T R - 7 5 R h e n i u m P o w d e r T R - 7 7 I r i d i u m P o w d e r T R - 7 8 P l a t i n u m P o w d e r T R - 7 9 G o l d P o w d e r T R - 8 0 M e r c u r y P o w d e r T R - 8 1 T h a l l i u m P o w d e r T R - 8 2 L e a d P o w d e r

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 74 SP E C I A L PU R P O S E RA D I O G R A P H Y SO U R C E S Y t t e r b i u m-169 (R-169) The low energy gamma and x-ray spectrum of Y b-169 makes this nuclide particularly suitable for radiographic examination of thin weldments and mechanical assemblies. The unique gamma spectrum of Yb-169 resembles the x-ray envelope spectrum from a low-to-intermediate energy x-ray tube. The active element consists of ytterbium oxide. This is encapsulated in a welded aluminum capsule 0.164 diameter x 0.322 long (4.06 mm x 8.38 mm), sufficiently small to be accommodated in most secondary capsules or radiography cameras. The active area is 0.60 x 0.180 (1.52 mm x 4.57 mm). Contained activity is supplied as a nominal value ±20%. H a l f - L i f e : 32.0 d Principal gammas (kev): 63.1 (437%), 110 (17.4%), 130 (11.1%), 177 (21.5%), 198 (34.9%), 308 (10.8%), Tm K x-rays: 50-59 kev ( 1 8 6 % ) CATALOG ACTIVITY ACTIVITY N U M B E R ( C i ) ( G B q ) R - 1 6 9-1 Up to 0.1 Up to 3.7 R - 1 6 9-2 0. 2 7.4 R - 1 6 9-3 0. 5 1 8. 5 R - 1 6 9-4 1. 0 3 7 Selenium-75 (R-75) This nuclide has a gamma spectrum predominantly in the 100-400 kev range, making it useful for specialized radiography and gauging applications. The active element is a 0.197 x 0.197 (5.00 x 5.00 mm) cylinder of metallic selenium in an aluminum capsule 0.5 long x 0.315 diameter (12.7 mm x 8.00 mm). Contained activity is sup plied as a nominal value ±20%. Higher activities and special encapsulations are available. H a l f - l i f e : 120 d ALUMINUM CAPSULE Principal gammas (kev): 121 (17.3%), 136 (59.0%), 265 (59.2%), 280 (25.2%), 4 0 1 (11.6%), As K x-rays: 10-12 kev (55.6%) CATALOG ACTIVITY ACTIVITY N U M B E R ( m C i ) ( G B q ) 0.164" (4.17 mm) 0.322" (8.18 mm) R - 7 5-1 1 0 0 3. 7 R - 7 5-2 200 7. 4 FIGURE 74-A 3603 Capsule (Yb-169) OUTER CAPSULE 1100 ALUMINUM 0.500" (12.7 mm) 0.315" (8.0 mm) PURE Se-75 METAL INNER OUTER WELD FIGURE 74-B 3616 Capsule (Se-75)

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 75 SP E C I A L PU R P O S E RA D I O G R A P H Y SO U R C E S 3805 Capsule (formerly SK-201) The Yb-169 and Se-75 sources listed on the previous page are available welded into the 3805 capsule (formerly SK-201). This is a stainless steel capsule 0.492 diameter x 1.95 long (12.5 mm x 49.5 mm) with an eyelet at the welded end. Contained activity is supplied as a nominal value ±20%. ACTIVE ELEMENT 1.950" (49.5 mm) WELD Model R-169-3805: Yb-169 0.492" (12.5 mm) Model R-75-3805: Se-75 CAPSULE FIGURE 75-A 3805 CAPSULE (FORMERLY SK-201) 3 6 1 6 C A P S U L E 3 6 0 3 C A P S U L E 3805 CAPSULE FIGURE 75-B SPECIAL PURPOSE RADIOGRAPHY SOURCES To place an order: Phone 818 843-7000 - FAX 818 843-6168 Please include the catalog number, the capsule or configuration number, the nuclide, the activity and any NIST traceability requirements.

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 76 HI G H A C T I V I T Y GA M M A RA D I A T I O N SO U R C E S PHIS SERIES AM E R I C I U M- 2 4 1 A p p l i c a t i o n : These sources are typically used in industrial thickness gauges. D e s c r i p t i o n : Americium-241 homogeneously sintered in ceramic pellet, encapsulated in a TIG welded single stainless steel special form capsule. nominal nominal external active height window ISO 2919 activity activity diameter diameter thickness classification A B C D capsule GBq mci mm mm mm mm 31-4-1 3.7 100 10.8 7.5 6 0.2-0.25 C 64444 31-4-2 11.7 300 15 12 6 0.2-0.25 C 64444 31-4-3 18.5 500 22 18 6 0.2-0.25 C 64444 31-4-4 37 1000 30 25 6 0.2-0.25 C 64444 31-4-5 111 3000 36 31 8 0.25-0.3 E 64444 31-4-6 185 5000 45 40 8 0.25-0.3 E 64444 H a l f - l i f e : 433 years 31-4 Photon energy: E = 59.5 kev A p p l i c a t i o n : Sources are used for applications in industrial gauging, e.g. fill level inspection. D e s c r i p t i o n : Americium-241 sintered in ceramic pellet, encapsulated in a TIG welded single stainless steel special form capsule. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification A B capsule GBq mci mm mm mm 31-5-1 7.4 1-200 4.4 3.3 0.2-0.25 single C 64444 31-5-2 7.4 1-200 4.0 3.0 0.2-0.25 single C 64444 H a l f - l i f e : 433 years Photon energy: E = 59.5 kev 31-5

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 77 HI G H A C T I V I T Y GA M M A RA D I A T I O N SO U R C E S (c o n t i n u e d) HEGS SERIES CO B A L T- 6 0 A p p l i c a t i o n : Sources are used for various applications in industrial gauging. D e s c r i p t i o n : A nickeled radioactive Cobalt-60 pellet is encapsulated in a TIG welded, double walled, stainless steel capsule. The inner capsule has a wall thickness of 0.4 mm on all sides. They are housed in a TIG welded stainless steel capsule of wall thickness 1.15mm. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm mm A3028 18.5 0.5-500 6.4 3.0 0.8 double C 66646 A3029 18.5 0.5-500 6.4 3.0 0.8 double C 66646 A3028-1 18.5 0.5-500 6.4 3.0 0.8 double C 66646 A3029-1 18.5 0.5-500 6.4 3.0 0.8 double C 66646 A3028 A3029 Half-life: 5.27 years Photon energy: E 1 = 1.33 MeV E 2 = 1.17 MeV

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 78 HI G H A C T I V I T Y GA M M A RA D I A T I O N SO U R C E S (c o n t i n u e d) HEGS SERIES CE S I U M- 1 3 7 A p p l i c a t i o n : Sources can be used for thickness, level and density gauges and various other applications in industrial gauging. D e s c r i p t i o n : The source contains Cs-137 in an almost insoluble and abrasion resistant form. The ceramic activity carriers are sealed in stainless steel capsules with a wall thickness of 0.4mm on all sides. The primary capsules are sealed by argonarc welding. They are housed in a TIG welded second stainless steel capsule. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm mm 31-2-1 30 0.1-800 5.0 4.0 0.4 single 31-2-2 18.5 0.1-500 5.0 4.0 0.4 single 30-3-1 30 0.1-800 6.0 4.0 0.8 double C 65445 30-3-2 18.5 0.1-500 6.0 4.0 0.8 double C 65445 Half-life: 30.2 years Photon energy: E = 662 kev radioactive part 31-2-1: Ø4 x 4 31-2-2: Ø4 x 3 radioactive part 30-3-1: Ø4 x 4 30-3-2: Ø4 x 3 A p p l i c a t i o n : Sources can be used for thickness, level and density gauges and various other applications in industrial gauging. D e s c r i p t i o n : The source contains Cs-137 in an almost insoluble and abrasion resistant form. The ceramic activity carriers are sealed in stainless steel capsules with a wall thickness of 0.3 m m (wall) and 0.5 mm (ends). The primary capsules are sealed by TIG welding. They are housed in a TIG welded second stainless steel capsule. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm mm 30-4-1 81.4 1-2200 8.0 6.0 1.0 double C 66646 30-4-2 81.4 1-2200 11.0 6.0 1.5 double C 66646 30-4-1 Half-life: 30.2 years Photon energy: E = 662 kev 30-4-2

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 79 HI G H A C T I V I T Y GA M M A RA D I A T I O N SO U R C E S (c o n t i n u e d) HEGS SERIES CE S I U M- 1 3 7 A p p l i c a t i o n : The sources can be used for thickness, level and density gauges and various other industrial a p p l i c a t i o n s. D e s c r i p t i o n : The source contains Cs-137 in an almost insoluble and abrasion resistant form. The ceramic activity carriers are sealed in a TIG welded stainless steel capsule with a wall thickness of 0.4 mm. They are housed in a second TIG welded stainless steel capsule. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness ulation classification capsule GBq mci mm mm mm 31-1 18.5 0.1-500 4.0 3.0 0.8 single C 66445 A3028 18.5 0.1-500 6.4 3.0 0.8 double C 66646 A3029 18.5 0.1-500 6.4 3.0 0.8 double C 66646 A3028-1 18.5 0.1-500 3.0 0.8 double C 66646 A3029-1 18.5 0.1-500 3.0 0.8 double C 66646 31-1 A3028 A3028-1 A3029-1 A3029 Half-life: 30.27 years Photon energy: 662 kev

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 80 HI G H A C T I V I T Y GA M M A RA D I A T I O N SO U R C E S (c o n t i n u e d) HEGS SERIES CE S I U M- 1 3 7 A p p l i c a t i o n : Sources can be used for thickness, level and density gauges and various other applications in industrial gauging. D e s c r i p t i o n : The source contains Cs-137 in an almost insoluble and abrasion resistant form. The ceramic activity carriers are sealed in stainless steel capsules. The primary capsules are sealed by argonarc welding. They are housed in a TIG welded stainless steel capsule. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm mm 30-2-1 18.5 500 12.7 4.0 1.1 double C 66646 30-2 - 2 3 7 1000 12. 7 6. 0 1. 2 d o u b l e C 66646 30-2-1 30-2-2 Half-life: 30.2 years Photon energy: 662 kev

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 81 BE T A RA D I A T I O N SO U R C E S B F I S S E R I E S KR Y P T O N- 8 5 A p p l i c a t i o n : The sources are used for applications in industrial gauging. D e s c r i p t i o n : Krypton-85 gas, hermetically sealed in a nickel t u b e. nominal nominal overall active wall encapsuactivity activity length length thickness lation A B Ni / SS capsule GBq mci mm mm µm 33-7-1 1.85 50 70 50 50 single 33-7-2 3.7 100 117 100 50 single 33-7-3 7.4 200 217 200 50 single 33-7-4 11.1 300 317 300 50 single 33-7-5 14.8 400 417 400 50 single Line sources with length and nominal activity differing from the types given in the figure on the right available on request. Half-life: 10.7 years ß-energy: 670 kev Ni: Ø 3.7mm SS: Ø 5.1mm 33-7

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 82 BE T A R A D I A T I O N SO U R C E S (c o n t i n u e d) BFIS SERIES KR Y P T O N- 8 5 A p p l i c a t i o n : The sources are used for applications in industrial and environmental gauging. D e s c r i p t i o n : Krypton-85 gas, hermetically sealed in a cylindrical single stainless steel or titanium capsule with a stainless steel or titanium window respectively. The capsule is sealed by electric arc welding. Two holes can be used for fixing the s o u r c e. capsule GBq mci mm mm mm µm 33-3 18.5 500 22 18 12 25 single C 32141 33-4 18.5 500 22 18 8 25 single C 32141 33-5 18.5 500 22 18 12 25 single C 32141 Half-life: 10.7 years ß-energy: 670 kev nominal nominal external active height window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification 33-3 33-4 33-5 A p p l i c a t i o n : The sources can be used for applications in industrial and environmental gauging. D e s c r i p t i o n : Krypton-85 gas, hermetically sealed in a cylindrical single stainless steel capsule with a stainless steel window respectively. The capsule is sealed by electric arc welding. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm µm 33-6-1 148 400 12.7 7 25 single C 43242 33-6-2 148 400 12.7 8.5 25 single C 43242 33-6-1 33-6-2 Half-life: 10.7 years ß-energy: 670 kev

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 83 BE T A RA D I A T I O N SO U R C E S (c o n t i n u e d) B F I S S E R I E S KR Y P T O N- 8 5 A p p l i c a t i o n : The source is used for applications in environmental gauging. D e s c r i p t i o n : Krypton-85 gas, hermetically sealed in a cylindrical single titanium capsule with two brazed titanium windows. The source is mounted in a chromium-plated brass adapter ring. nominal nominal external active window encapsu- ISO 2919 activity activity diameter diameter thickness lation classification capsule GBq mci mm mm µm 33-2 1.85 50 47 20 25 single C 34141 33-2 Half-life: 10.7 years ß-energy: 670 kev B F I S S E R I E S RU T H E N I U M- 1 0 6 A p p l i c a t i o n : Sources can be used for thickness gauges and for calibration or reference, and other scientific a p p l i c a t i o n s. D e s c r i p t i o n : The source is an Aluminum capsule containing R u t h e n i um-106, electrodeposited on a silver target, further sealed in silver foil. The rear side of the source has three tapped holes and one annular groove in the external wall of the caps u l e. nominal nominal external active window Thread ISO 2919 activity activity diameter diameter diameter thickness (metric) classification A B C capsule MBq mci mm mm mm mm m 12-2-1 22 0.6 18 12 14 0.1 M 2 C 44343 12-2-2 40 1.1 28 18 21.5 0.1 M3 C 44343 12-2-3 60 1.6 36 24 28.5 0.1 M 3 C 44343 Half-life: 369 days ß-energy: 3.54 MeV 12-2

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 84 RESERV ED

03.35580.Iso Catalog56-85 4/23/99 9:21 PM Page 85 NE U T R O N SO U R C E S A N S S E R I E S AM E R I C I U M- 2 4 1 / BE R Y L L I U M A p p l i c a t i o n : Neutron sources are used in geological prospecting, moisture gauging, activation analysis, nuclear research, and for applications in oil well logging. D e s c r i p t i o n : Homogeneous mixture of Americium-241 oxide with Beryllium metal, encapsulated in a TIG welded double stainless steel special form c a p s u l e. nominal nominal external overall ISO 2919 IAEA activity activity diameter length classification Special Form capsule GBq mci mm mm 30-5-1 18.5 500 19.1 22 C 64544 D/0067/S-85 30-5-2 1.48 40 7.8 10 C 66545 D/0059/S-85 30-6 685 18 500 27.0 130.2 C 66545 D/0068/S-85 30-7-2 11.1 300 17.4 19.2 C 66544 D/0064/S-85 30-7-1 1.48 40 7.8 15 C 66544 D/0065/S-85 30-5-1 30-5-2 30-6 30-7-2 30-7-1 Half-life: 432.2 years Neutron emission: 2.2 x 10 6 n/s per Ci