NIGAS. i o n. N B C D e t e c t. The Neutron Induced Gamma Spectrometer

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1 NIGAS The Neutron Induced Gamma Spectrometer N B C D e t e c t i o n

2 Po Non-invasive Identification of Explosives and Chemical Warfare Agents Positioning System The NIGAS utilizes Neutron Induced Gamma Spectroscopy for the detection of explosives and chemical warfare agents (CWAs) in ammunition such as shells and bombs. This non-invasive method allows investigation of closed containers and thus avoids the risk of emissions. The NIGAS is transportable. It can be used in ammunition depots and under field conditions. Components of the NIGAS Positioning System Different types of shells or containers can be investigated; their measuring position is adjusted via remote control. Positioning data for common shells can be saved and retrieved. NIGAS Remote Control Enables remote positioning of the investigated object, neutron source, and detector. Pulsable Neutron Source The pulsable neutron generator does not emit radiation when switched off. Therefore radiation protection is only needed during the actual analysis process. Detection System Electrically cooled HPGe detector with fast signal processing unit. Pulsable Neutron Source Remote Control Unit Neutron Generator Computer and Software PC with software for integrated system control, data acquisition, spectra evaluation and substance identification. HPG Electronics Electrical Cool

3 The Neutron Induced Gamma Spectrometer Detector sitioning System ng System

4 Method description CWA and Explosives Identification by Neutron Activation Analysis A pulsable neutron generator, based on Deuterium-Deuterium reaction, which does not emit radiation when switched off, is used as neutron source. Reaction of neutrons with the contents of the shell results in substance specific gamma emissions which are characteristic for the elements and their relative concentrations and therefore enable their identification. In contrast to explosives, chemical warfare agents contain the key elements chlorine, arsenic, sulfur, phosphorus and/or fluorine, which allow to distinguish them. The method is well suited for the detection of any chemical warfare agent old ones produced during World Wars I and II, as well as modern agents. The pulse regime of the neutron generator allows the measurement of neutron induced γ-rays from both generative processes - neutron inelastic scattering and neutron capture - in separated spectra. This procedure improves the signal/background ratio and prevents interference between these two types of nuclear reactions. Identification of contents of ammunition in Langemark-Poelkapelle (Belgium), Hallschlag (Germany) and Porton Down (UK).

5 Software The integrated NIGAS control and analysis software gives fast access to all relevant parameters for system operation. The complete spectrum acquisition and substance identification cycle is repeated every 10 seconds. Analytical data is automatically interpreted, and results are displayed on-line during the measuring process. 4 1 Identified elements 2 Identified warfare agent (here: Lewisite) and probability of identification 3 Detected elements are graphically displayed, refreshed every 10 s during the measurement Result report in HTML format Technical specifications Intrusive, non-destructive method Usable in ammunition destruction facilities, depots and under field conditions Transportable Measurement of different types of shells, bombs, cans, barrels, etc. Identification of the characteristic elements for CWAs (H, N, F, P, S, Cl, As) and of other elements (Na, Mg, K, Ca, Ti, Zn, Br, Sr, Sn, I, Ba, Pb) which identify uncommon contents or special construction materials Automatic spectrum analysis and substance identification Neutron source Neutron generator En= 2,5 MeV Neutron flux n/s Pulse length 30 µs Pulse frequency 10 khz Technical Data Power consumption: Weight: Size: max W 270 kg 130 x 96 x 135 cm

6 Our product line for nuclear, biological and chemical detection please ask for detailed information. Nuclear Radiation Detection SVG 2 The new generation of nuclear radiation detectors RAID-XP Innovative and flexible instrument for NC detection Biological Warfare Agent Detection CBMS The Chemical Biological Mass Spectrometer Chemical Warfare Agent Detection MM 1/MM 2 Mobile Mass Spectrometer RAID series Rapid Alarm and Identification Devices for CWAs RAPID Stand-off detector for atmospheric pollutants Chemical Emergencies and Demilitarisation EM 640/EM 640S Mobile/transportable Mass Spectrometers for the detection of chemical hazards NIGAS System for non-destructive identification of explosives and CWAs Pictures by courtesy of: Feuerwehr Hamburg, Bundesministerium der Verteidigung, Bruker Daltonik GmbH Bruker Daltonics NBC-3/2 Bruker Daltonik GmbH Bremen Germany Phone +49 (421) Fax +49 (421) sales@bdal.de Bruker Daltonics Inc. Billerica, MA USA Phone +1 (978) Fax +1 (978) ms-sales@bdal.com See our website for worldwide sales and service contacts. Bruker Daltonik GmbH Leipzig Germany Phone +49 (341) Fax +49 (341) sales@bdal.de