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Proceedings Paper

Investigation of CaF2:Eu scintillator for D-D neutron interrogation
Author(s): Andrew D. Herr; Arlyn J. Antolak; Dan H. Morse; Michael King; Kristin Hertz; Ka-Ngo Leung; Tak-Pui Lou
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Paper Abstract

CaF2:Eu is an attractive radiation detection material because it is inert, non-hygroscopic, shock resistant, and can be less expensive than other radiation detection materials. A CaF2:Eu scintillation detector was constructed to identify whether energy dependent differences in (n,p) and (n,α) cross sections could be exploited to distinguish fission neutrons from D-D neutrons in an active interrogation system. Experimentally, the charged particles are difficult to distinguish from the significantly larger number of γ-rays produced in (n,γ) reactions. In addition, modeling results show that fission neutrons produce only slightly higher charged particle production rates than D-D neutrons. For charged particle production in CaF2:Eu to succeed in fission neutron detection, a superior γ-ray discrimination technique is required.

Paper Details

Date Published: 18 October 2007
PDF: 5 pages
Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 670711 (18 October 2007);
Show Author Affiliations
Andrew D. Herr, Sandia National Labs (United States)
Georgetown University (United States)
Arlyn J. Antolak, Sandia National Labs (United States)
Dan H. Morse, Sandia National Labs (United States)
Michael King, Sandia National Labs (United States)
Lawrence Berkeley National Lab. (United States)
Kristin Hertz, Sandia National Labs (United States)
Ka-Ngo Leung, Lawrence Berkeley National Lab. (United States)
Tak-Pui Lou, Lawrence Berkeley National Lab. (United States)

Published in SPIE Proceedings Vol. 6707:
Penetrating Radiation Systems and Applications VIII
F. Patrick Doty; H. Bradford Barber; Hans Roehrig, Editor(s)

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