Direction sensitive neutron detector
Abstract
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:
- Research Org.:
- Trustees of Boston University, Boston, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1341874
- Patent Number(s):
- 9,557,423
- Application Number:
- 12/893,221
- Assignee:
- Trustees of Boston University (Boston, MA)
- DOE Contract Number:
- FG02-06ER41425; FG02-05ER41385; FG02-05ER41360
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Sep 29
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., and Inglis, Andrew. Direction sensitive neutron detector. United States: N. p., 2017.
Web.
Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., & Inglis, Andrew. Direction sensitive neutron detector. United States.
Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., and Inglis, Andrew. Tue .
"Direction sensitive neutron detector". United States. https://www.osti.gov/servlets/purl/1341874.
@article{osti_1341874,
title = {Direction sensitive neutron detector},
author = {Ahlen, Steven and Fisher, Peter and Dujmic, Denis and Wellenstein, Hermann F. and Inglis, Andrew},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {1}
}
Works referenced in this record:
Subthreshold neutron interrogator for detection of radioactive materials
patent, May 1980
- Evans, Michael; Menlove, Howard; Baker, Michael
- US Patent Document 4,201,912
Neutral radiation detection and localization
patent, August 1981
- Charpak, Georges; Ngoc, Hoan; Policarpo, Armando
- US Patent Document 4,286,158
Device for determining the spatial distribution of radiation
patent, February 1982
- Charpak, Georges
- US Patent Document 4,317,038
Imaging device for ionizing radiation
patent, June 1993
- Charpak, George
- US Patent Document 5,223,717
Gas ionizing-radiation detector
patent, September 1994
- Charpak, Georges
- US Patent Document 5,347,131
X-ray imaging crystal spectrometer for extended X-ray sources
patent, July 2001
- Bitter, Manfred; Fraenkel, Ben; Gorman, James
- US Patent Document 6,259,763
High voltage distribution system for solid state scintillation detectors and gamma camera system incorporating the same
patent, March 2002
- Pawlak, John; Dailey, George
- US Patent Document 6,359,281
Detection of ionizing radiation
patent, September 2003
- Francke, Tom; Peskov, Vladimir
- US Patent Document 6,627,897