Investigation of CaF<sub>2</sub>:Eu scintillator for D-D neutron interrogation

Andrew D. Herr; Arlyn J. Antolak; Dan H. Morse; Michael King; Kristin Hertz; Ka-Ngo Leung; Tak-Pui Lou

doi:10.1117/12.740823

18 October 2007 Investigation of CaF₂:Eu scintillator for D-D neutron interrogation

Andrew D. Herr, Arlyn J. Antolak, Dan H. Morse, Michael King, Kristin Hertz, Ka-Ngo Leung, Tak-Pui Lou

Proceedings Volume 6707, Penetrating Radiation Systems and Applications VIII; 670711 (2007) https://doi.org/10.1117/12.740823
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Andrew D. Herr, Arlyn J. Antolak, Dan H. Morse, Michael King, Kristin Hertz, Ka-Ngo Leung, and Tak-Pui Lou "Investigation of CaF₂:Eu scintillator for D-D neutron interrogation", Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 670711 (18 October 2007); https://doi.org/10.1117/12.740823

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