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Title: Direction sensitive neutron detector

A neutron detector includes a pressure vessel, an electrically conductive field cage assembly within the pressure vessel and an imaging subsystem. A pressurized gas mixture of CF.sub.4, .sup.3He and .sup.4He at respective partial pressures is used. The field cage establishes a relatively large drift region of low field strength, in which ionization electrons generated by neutron-He interactions are directed toward a substantially smaller amplification region of substantially higher field strength in which the ionization electrons undergo avalanche multiplication resulting in scintillation of the CF.sub.4 along scintillation tracks. The imaging system generates two-dimensional images of the scintillation patterns and employs track-finding to identify tracks and deduce the rate and direction of incident neutrons. One or more photo-multiplier tubes record the time-profile of the scintillation tracks permitting the determination of the third coordinate.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1341874
Assignee:
Trustees of Boston University (Boston, MA) CHO
Patent Number(s):
9,557,423
Application Number:
12/893,221
Contract Number:
FG02-06ER41425; FG02-05ER41385; FG02-05ER41360
Resource Relation:
Patent File Date: 2010 Sep 29
Research Org:
Trustees of Boston University, Boston, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Other works cited in this record:

Subthreshold neutron interrogator for detection of radioactive materials
patent, May 1980

Neutral radiation detection and localization
patent, August 1981

Device for determining the spatial distribution of radiation
patent, February 1982

Imaging device for ionizing radiation
patent, June 1993

Gas ionizing-radiation detector
patent, September 1994

X-ray imaging crystal spectrometer for extended X-ray sources
patent, July 2001

High voltage distribution system for solid state scintillation detectors and gamma camera system incorporating the same
patent, March 2002

Detection of ionizing radiation
patent, September 2003

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