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2 - TABLE OF CONTENTS i Pose Morning Session, 11 May 1981: Chairman, R. A. Muller "* PRELUDE THE EARLY DAYS OF ACCELERATOR MASS SPECTROMETRY 1 L. W. Alvarez THE CHALLENGE FROM LOW-ENERGY MASS SPECTROMETRY G. J. Wasserburg (presentation only) PROGRAMS AT EXISTING ACCELERATORS ULTRASENSITIVE MASS SPECTROMETRY WITH A TANDEM VAN DE GRAAFF ACCELERATOR 16 H. E. Gove ACCELERATOR MASS SPECTROMETRY WITH THE GRENOBLE AND ORSAY CYCLOTRONS 23 G. M. Raisbeck and F. Yiou RADIOCARBON DATING WITH THE CHALK RIVER MP TANDEM ACCELERATOR 34 G. C. Ball, H. R. Andrews, R. M. Brown, N. Burn, W. G. Davies, Y. Imahori and J. C. D. Milton Afternoon Session, 11 May 1981: Chairman, A. E. Litherland PROGRAMS AT EXISTING ACCELERATORS (continued) THE ROLE OF ACCELERATOR MASS SPECTROMETRY IN NUCLEAR PHYSICS 43 W. Kutschera INSTRUMENTATION OF AN FN TANDEM FOR THE DETECTION OF 10Be 57 R. Middleton, J. Klein and Hongqing Tang IMPROVEMENTS IN THE APPLICATION OF A TANDEM VAN DE GRAAFF ACCELERATOR FOR ULTRA-SENSITIVE MASS SPECTROMETRY 87 M. Suter, R. Balzer, G. Bonani, Ch. Stoller, W. W61fli, J. Beer, H. Oeschger and B. Stauffer ACCELERATOR MASS SPECTROMETRY AT THE UNIVERSITY OF WASHINGTON G. W. Farwell, F. H. Schmidt and P. M. Grootes 10 iii 4

3 Table of Contents (cont'd) PLAN FOR MASS ACCELERATOR SPECTROMETRY AT GIF-SUR-YVETTE AND SACLAY 120 B. Berthier, L. Bianchi, G. Delibrias and Y. Koechlin REPORT ON ACCELERATOR MASS SPECTROMETRY EXPERIMENTS AT THE REHOVOT 14UD PELLETRON M. Paul, R. Kaim, A. Breskin, R. Chechik, J. Gerber, M. B. Goldberg, N. Zwang and A. Kaufman (not presented) 130 SEARCH FOR EXOTIC PARTICLES SEARCH FOR ANOMALOUSLY HEAVY ISOTOPES J. Klein, R. Middleton and W. E. Stephens 136 RECENT SEARCH FOR QUARKS AND VERY HEAVY HYDROGEN ISOTOPES USING AN (ALMOST) ALL-ELECTROSTATIC SYSTEM J. P. Scniffer, H. Ernst, W. Henning and W. Kutschera 154 A MASS-INDEPENDENT SEARCH FOR FRACTIONALLY CHARGED PARTICLES K. H. Chang, A. E. Litherland, L- R. Kilius, R. P. Beukens, W. E. Kieser and F-. L. Hallin 157 A SEARCH FOR ANOMALOUS HYDROGEN IN ENRICHED D 0, USING A TIME-OF-FLIGHT SPECTROMETER 7 P. F. Smith, J. R. J. Bennett, G. J. Homer, J. D. Lewin, H. E. Walford and W. A. Smith (not presented) 170 Morning Session, 12 May 1981: Chairman, P. Parker APPLICATION TO VARIOUS ISOTOPES APPLICATION OF AMS TO HYDROLOGY H. W. Bentley and S. N. Davis 10Be IN THE ENVIRONMENT: SOME RECENT RESULTS AND THEIR APPLICATIONS G. M. Raisbeck, F, Yiou, M. Lieuvin, J. C. Ravel, M. Fruneau and J. M. Loiseaux 10Be IN MANGANESE NODULES J. Thomas, P. Parker, A. Mangini, T. Turekian, S. Krishnaswami K. Cochran, and P. Sharma iv

4 Table of Contents (cont'd) THE PREPARATION OF A 10Be STANDARD 255 J. Southon, I. Thorson, D. E. Nelson, R. Korteling, J. S. Vogel, T. L. Ku, J. L, Reyss and I. Nowikow MEASUREMENT OF COSMOGENIC NUCLIDES IN EXTRATERRESTRIAL MATERIAL 262 K. Nishiizumi and J. R. Arnold TANDEM VAN DE GRAAFF MEASUREMENT OF 10Be IN METEORITES T. H. Kruse, R. Moniot, G. Herzog, T. Milazzo, G. Hall and W. Savin EARTHQUAKE DATING BY 14C ATOM COUNTING 285 A. B. Tucker, G. Bonani, M. Suter and W. Wolfli Afternoon Session, 12 May 1981: Chairman, A. M. Hoogenboom APPLICATIONS TO VARIOUS FIELDS (continued) STABLE ISOTOPE APPLICATIONS OF AMS IN GEOLOGY 293 J. C. Rucklidge RARE STABLE ISOTOPES IN METEORITES 310 G. C. Wilson ACCELERATOR MASS SPECTROMETRY OF 59Ni AND Fe ISOTOPES AT THE ARGONNE SUPERCONDUCTING LINAC 320 W. Henning, W. Kutschera, B. Myslek-Laurikainen, R. C. Pardo, R. K. Smither and J. L. Yntema SEARCH FOR THE 36C1 ISOTOPE IN NATURAL SAMPLES BY CYCLOTRON OR TANDEM ACCELERATORS 330 I. Brissaud, J. Kalifa, H. Laurent, J. C. Roynette, C. Zaidins, J. C. Fontes, J. M. Gamier, J. Guillot, A. Peghaire, S. Plattard and J. Uzureau (not presented) THE MUNICH ATTEMPT TO DETECT 36C1 341 P. W. Kubik, G. Korschinek, E. Nolte, M. S. Pravikoff and H. Morinaga Morning Session, 13 May 1981: Chairman, R, Middleton SPECIFIC PROBLEMS IN ACCELERATOR MASS SPECTROMETRY MASS SPECTROMETRY WITH A VERY SMALL CYCLOTRON 342 R. A. Muller, P. P. Tans, T- S. Mast and J. J- Welch i REPRODUCIBILITY OF ISOTOPE RATIO MEASUREMENTS 346 D. Elmore V

5 Table of Contents (cont'd) ISOTOPIC FRACTIONATION IN ACCELERATOR BASED RADIOCARBON DATING 359.* -. -, ^O R' white THE INVERTED SPHERICAL IONISER SPUTTER ION SOURCE (IS3). N. R. White. 373 OSIRIS 381 S. H. Chew, E. F. Garman, T. J. L. Greenway and K. W. Allen BROAD BAND MASS ANALYSIS AT MeV ENERGIES 391 L. R. Kilius, K. H. Chang, E. L. Hallin and A. E. Litherland CALIBRATION SAMPLES FOR ACCELERATOR MASS SPECTROMETRY R. L. Hershberger, D. S. Flynn and F. Gabbard PRODUCTION OF CHARCOAL FOR ACCELERATOR TARGETS 404 S. W. Leavitt, D. J. Donahue and A. Long SAMPLE PREPARATION FOR ACCELERATOR MASS SPECTROMETRY AT THE UNIVERSITY OF WASHINGTON 405 P. M. Grootes, M. Stuiver, G. W. Farwell and F. H. Schmidt THE PRODUCTION OF SMALL CARBON SAMPLES BY R.F. DISSOCIATION 416 OF ACETYLENE R. P. Beukens and H. W. Lee INSTABILITY OF KH~ AND POTENTIAL IMPLICATIONS FOR DETECTION OF 41Ca WITH A TANDEM ELECTROSTATIC ACCELERATOR 426 G. M. Raisbeck, F. Yiou, A. Peghaire, J. Guillot and J. Uzureau Afternoon Session, 13 May 1981: Chairman, G. Raisbeck DEDICATED FACILITIES A PRELIMINARY DESCRIPTION OF A DEDICATED COMMERCIAL ULTRA-SENSITIVE MASS SPECTROMETER FOR DIRECT ATOM COUNTING OF I4C. * K. H. Purser, R. J. Schneider, J. McG. Dobbs and R. Post 431 THE ISOTRACE LABORATORY AT THE UNIVERSITY OF TORONTO, R. P. Beukens vi

6 A Table of Contents (cont'd) THE RADIOCARBON FACILITY AT THE RESEARCH LABORATORY FOR ARCHAEOLOGY IN OXFORD - REVIEW -... N. R. White, R. E. M. Hedges, J. O. Wand and E. T. Hall THE N.S.F.-ARIZONA DEDICATED FACILITY D. J. Donahue THE RESEARCH PROJECT AT NAGOYA UNIVERSITY M. Furukawa, N. Nakai and E. Nakano LIST OF PARTICIPANTS AUTHOR INDEX vii