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Title: Compact ion chamber based neutron detector

Abstract

A directional neutron detector has an ion chamber formed in a dielectric material; a signal electrode and a ground electrode formed in the ion chamber; a neutron absorbing material filling the ion chamber; readout circuitry which is electrically coupled to the signal and ground electrodes; and a signal processor electrically coupled to the readout circuitry. The ion chamber has a pair of substantially planar electrode surfaces. The chamber pressure of the neutron absorbing material is selected such that the reaction particle ion trail length for neutrons absorbed by the neutron absorbing material is equal to or less than the distance between the electrode surfaces. The signal processor is adapted to determine a path angle for each absorbed neutron based on the rise time of the corresponding pulse in a time-varying detector signal.

Inventors:
; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1224436
Patent Number(s):
9,170,340
Application Number:
14/539,972
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Nov 12
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Derzon, Mark S., Galambos, Paul C., and Renzi, Ronald F. Compact ion chamber based neutron detector. United States: N. p., 2015. Web.
Derzon, Mark S., Galambos, Paul C., & Renzi, Ronald F. Compact ion chamber based neutron detector. United States.
Derzon, Mark S., Galambos, Paul C., and Renzi, Ronald F. Tue . "Compact ion chamber based neutron detector". United States. https://www.osti.gov/servlets/purl/1224436.
@article{osti_1224436,
title = {Compact ion chamber based neutron detector},
author = {Derzon, Mark S. and Galambos, Paul C. and Renzi, Ronald F.},
abstractNote = {A directional neutron detector has an ion chamber formed in a dielectric material; a signal electrode and a ground electrode formed in the ion chamber; a neutron absorbing material filling the ion chamber; readout circuitry which is electrically coupled to the signal and ground electrodes; and a signal processor electrically coupled to the readout circuitry. The ion chamber has a pair of substantially planar electrode surfaces. The chamber pressure of the neutron absorbing material is selected such that the reaction particle ion trail length for neutrons absorbed by the neutron absorbing material is equal to or less than the distance between the electrode surfaces. The signal processor is adapted to determine a path angle for each absorbed neutron based on the rise time of the corresponding pulse in a time-varying detector signal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {10}
}

Patent:

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Works referenced in this record:

Simulation of high-pressure micro-capillary 3He counters
journal, September 2008

  • Martin, Shawn; Chandler, Gordon; Derzon, Mark S.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 35, Issue 11, Article No. 115103
  • DOI: 10.1088/0954-3899/35/11/115103