skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [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
+ Show Author Affiliations

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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; US Department of Homeland Security (DHS), Domestic Nuclear Detection Office
Grant/Contract Number:
AC52-07NA27344; IAA HSHQDC-08-X-00874; LLNL-JRNL-641356
OSTI ID:
1237544
Alternate ID(s):
OSTI ID: 1247195
Report Number(s):
LLNL-JRNL-641356
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 799, Issue C; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (12)

Perforated Diode Fabrication for Neutron Detection conference October 2006
Microstructured semiconductor neutron detectors
  • McGregor, D. S.; McNeil, W. J.; Bellinger, S. L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 608, Issue 1 https://doi.org/10.1016/j.nima.2009.06.031
journal September 2009
Numerical Simulations of Pillar Structured Solid State Thermal Neutron Detector: Efficiency and Gamma Discrimination journal October 2009
6:1 aspect ratio silicon pillar based thermal neutron detector filled with B10 journal September 2008
Gamma discrimination in pillar structured thermal neutron detectors conference May 2012
High aspect ratio composite structures with 48.5% thermal neutron detection efficiency journal February 2013
Scalable large-area solid-state neutron detector with continuous p–n junction and extremely low leakage current
  • Huang, Kuan-Chih; Dahal, Rajendra; Lu, James J.-Q.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 763, p. 260-265 https://doi.org/10.1016/j.nima.2014.06.047
journal November 2014
High detection efficiency micro-structured solid-state neutron detector with extremely low leakage current fabricated with continuous p-n junction journal April 2013
Self-powered micro-structured solid state neutron detector with very low leakage current and high efficiency journal June 2012
Improved High Efficiency Stacked Microstructured Neutron Detectors Backfilled With Nanoparticle $^{6}$LiF journal February 2012
Optimizing diode thickness for thin-film solid state thermal neutron detectors journal October 2012
Conformal filling of silicon micropillar platform with [sup 10]boron
  • Deo, N.; Brewer, J. R.; Reinhardt, C. E.
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 26, Issue 4 https://doi.org/10.1116/1.2939260
journal January 2008

Similar Records

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
Thermal neutron detector
Gamma-ray discrimination
Silicon pillar
Boron