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Title: Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux

Abstract

Silicon pillar structures filled with a neutron converter material ( 10B) are designed to have high thermal neutron detection efficiency with specific dimensions of 50 μm pillar height, 2 μm pillar diameter and 2 μm spacing between adjacent pillars. In this paper, we have demonstrated such a detector has a high neutron-to-gamma discrimination of 10 6 with a high thermal neutron detection efficiency of 39% when exposed to a high gamma-ray field of 10 9 photons/cm 2s.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. King Saud Univ., Riyadh (Saudi Arabia)
  3. Univ. of Nebraska, Lincoln, NE (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE; US Department of Homeland Security (DHS), Domestic Nuclear Detection Office
OSTI Identifier:
1237544
Report Number(s):
LLNL-JRNL-641356
Journal ID: ISSN 0168-9002
Grant/Contract Number:
AC52-07NA27344; IAA HSHQDC-08-X-00874; LLNL-JRNL-641356
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 799; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; Thermal neutron detector; Gamma-ray discrimination; Silicon pillar; Boron

Citation Formats

Shao, Qinghui, Conway, Adam M., Voss, Lars F., Radev, Radoslav P., Nikolić, Rebecca J., Dar, Mushtaq A., and Cheung, Chin L. Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux. United States: N. p., 2015. Web. doi:10.1016/j.nima.2015.07.045.
Shao, Qinghui, Conway, Adam M., Voss, Lars F., Radev, Radoslav P., Nikolić, Rebecca J., Dar, Mushtaq A., & Cheung, Chin L. Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux. United States. doi:10.1016/j.nima.2015.07.045.
Shao, Qinghui, Conway, Adam M., Voss, Lars F., Radev, Radoslav P., Nikolić, Rebecca J., Dar, Mushtaq A., and Cheung, Chin L. 2015. "Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux". United States. doi:10.1016/j.nima.2015.07.045. https://www.osti.gov/servlets/purl/1237544.
@article{osti_1237544,
title = {Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux},
author = {Shao, Qinghui and Conway, Adam M. and Voss, Lars F. and Radev, Radoslav P. and Nikolić, Rebecca J. and Dar, Mushtaq A. and Cheung, Chin L.},
abstractNote = {Silicon pillar structures filled with a neutron converter material (10B) are designed to have high thermal neutron detection efficiency with specific dimensions of 50 μm pillar height, 2 μm pillar diameter and 2 μm spacing between adjacent pillars. In this paper, we have demonstrated such a detector has a high neutron-to-gamma discrimination of 106 with a high thermal neutron detection efficiency of 39% when exposed to a high gamma-ray field of 109 photons/cm2s.},
doi = {10.1016/j.nima.2015.07.045},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 799,
place = {United States},
year = 2015,
month = 8
}

Journal Article:
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Cited by: 2works
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