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Proceedings Paper

MOX assay using He-4 scintillation detectors
Author(s): David Murer; Rico Chandra; Giovanna Davatz; Hannes Friederich; Ulisse Gendotti; Ramsey Jebali
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Paper Abstract

A neutron spectroscopic technique for plutonium content measurement is described. The technique exploits the kinematic cuto of neutron emission from (α, n) reactions on oxygen. The Watt spectrum of ssion neutron emission extends to higher energies without such a cuto. 4He scintillation detectors were calibrated with an energy cut to reject neutrons of low energies, thereby making the detectors sensitive only to ssion neutrons but not to neutrons from the (α, n) reaction on oxygen. Experimental results are presented. Simulations are discussed to evaluate possible self shielding eects. Furthermore, numerous factors in uencing gamma rejection are discussed.

Paper Details

Date Published: 5 May 2012
PDF: 10 pages
Proc. SPIE 8358, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIII, 83581P (5 May 2012); doi: 10.1117/12.919205
Show Author Affiliations
David Murer, Arktis Radiation Detectors Ltd. (Switzerland)
ETH Zurich (Switzerland)
Rico Chandra, Arktis Radiation Detectors Ltd. (Switzerland)
Giovanna Davatz, Arktis Radiation Detectors Ltd. (Switzerland)
ETH Zurich (Switzerland)
Hannes Friederich, Arktis Radiation Detectors Ltd. (Switzerland)
ETH Zurich (Switzerland)
Ulisse Gendotti, Arktis Radiation Detectors Ltd. (Switzerland)
Ramsey Jebali, Arktis Radiation Detectors Ltd. (Switzerland)
ETH Zurich (Switzerland)


Published in SPIE Proceedings Vol. 8358:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIII
Augustus Way Fountain, Editor(s)

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