Angular response of perforated silicon diode high efficiency neutron detectors

S. L. Bellinger, W. J. McNeil, T. C. Unruh, D. S. McGregor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

22 Scopus citations

Abstract

Perforated silicon diodes with two different etched patterns were tested for neutron counting efficiency and angular response. The etched patterns consisted of circular holes on a square lattice or continuous sinusoidal waves. Normal incident neutron counting efficiencies were determined to be 21% and 35% for circular hole and sinusoidal devices, respectively. A non-uniform angular response was identified for the circular hole perforated devices. For the circular hole patterns, a reduction in efficiency appeared at azimuthal angles near 0° and 90°, each referenced at a 90° polar angle about the normal axis. The non-uniform angular response is due to neutron streaming paths through the square lattice. The sinusoidal device angular response was uniform and matched well to that of a standard simple planar device.

Original languageEnglish
Title of host publication2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Pages1904-1907
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI, United States
Duration: Oct 27 2007Nov 3 2007

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume3
ISSN (Print)1095-7863

Conference

Conference2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Country/TerritoryUnited States
CityHonolulu, HI
Period10/27/0711/3/07

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