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Proceedings Paper

Comparison of neutron sensitive scintillators for use with a solid-state optical detector
Author(s): Sharmistha Mukhopadhyay; Christopher Stapels; Eric B. Johnson; Eric C. Chapman; Paul S. Linsay; Thomas H. Prettyman; Michael R. Squillante; James F. Christian
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Paper Abstract

The detection of illicit nuclear sources and SNM requires an ubiquitous network of sensors. While 3He proportional counters are excellent neutron detectors, there is an insufficient global supply of 3He to create the required number of detectors. Alternatives to 3He must be efficient, insensitive to gamma radiation, easily manufactured, rugged, and inexpensive to enable the procurement of a large numbers of sensors. The use of a high sensitivity solid-state optical detector coupled to scintillation materials, loaded with a neutron absorber such as 6Li or 10B, can fulfill these design constraints. In this work, we compare the properties of neutron-sensitive scintillation materials utilizing Monte Carlo simulations and experiments. Cs2LiLaBr6:Ce is compared to commercially available boron-loaded plastic scintillators and 3He tubes. The scintillators are compared for neutron detection efficiency, limitations on size, gamma-rejection ratio, neutron detection limits, manufacturing cost, and availability for mass-production.

Paper Details

Date Published: 12 September 2009
PDF: 10 pages
Proc. SPIE 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, 74491P (12 September 2009); doi: 10.1117/12.830150
Show Author Affiliations
Sharmistha Mukhopadhyay, Radiation Monitoring Devices, Inc. (United States)
Christopher Stapels, Radiation Monitoring Devices, Inc. (United States)
Eric B. Johnson, Radiation Monitoring Devices, Inc. (United States)
Eric C. Chapman, Radiation Monitoring Devices, Inc. (United States)
Paul S. Linsay, Radiation Monitoring Devices, Inc. (United States)
Thomas H. Prettyman, Planetary Science Institute (United States)
Michael R. Squillante, Radiation Monitoring Devices, Inc. (United States)
James F. Christian, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 7449:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
Ralph B. James; Larry A. Franks; Arnold Burger, Editor(s)

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