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Title: Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation

Abstract

A sensor for simultaneously detecting neutrons and ionizing electromagnetic radiation comprising: a sensor for the detection of gamma radiation, the sensor defining a sensing head; the sensor further defining an output end in communication with the sensing head; and an exterior neutron-sensitive material configured to form around the sensing head; wherein the neutron-sensitive material, subsequent to the capture of the neutron, fissions into an alpha-particle and a .sup.7 Li ion that is in a first excited state in a majority of the fissions, the first excited state decaying via the emission of a single gamma ray at 478 keV which can in turn be detected by the sensing head; and wherein the sensing head can also detect the ionizing electromagnetic radiation from an incident radiation field without significant interference from the neutron-sensitive material. A method for simultaneously detecting neutrons and ionizing electromagnetic radiation comprising the steps of: providing a gamma ray sensitive detector comprising a sensing head and an output end; conforming an exterior neutron-sensitive material configured to form around the sensing head of the detector; capturing neutrons by the sensing head causing the neutron-sensitive material to fission into an alpha-particle and a .sup.7 Li ion that is in amore » first excited state in a majority of the fissions, the state decaying via the emission of a single gamma ray at 478 keV; sensing gamma rays entering the detector through the neutron-sensitive material; and producing an output through a readout device coupled to the output end; wherein the detector provides an output which is proportional to the energy of the absorbed ionizing electromagnetic radiation.« less

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
872795
Patent Number(s):
6011266
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; method; simultaneous; detection; neutrons; ionizing; electromagnetic; radiation; sensor; simultaneously; detecting; comprising; gamma; defining; sensing; head; output; communication; exterior; neutron-sensitive; material; configured; form; subsequent; capture; neutron; fissions; alpha-particle; excited; majority; decaying; via; emission; single; ray; 478; kev; detected; detect; incident; field; significant; interference; steps; providing; sensitive; detector; conforming; capturing; causing; fission; rays; entering; producing; readout; device; coupled; provides; proportional; energy; absorbed; ionizing electromagnetic; device coupled; detecting neutrons; incident radiation; gamma rays; gamma ray; electromagnetic radiation; gamma radiation; sensitive detector; radiation comprising; radiation field; sensitive material; simultaneously detecting; readout device; detector comprising; simultaneous detection; single gamma; ray sensitive; detecting neutron; /250/

Citation Formats

Bell, Zane W. Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation. United States: N. p., 2000. Web.
Bell, Zane W. Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation. United States.
Bell, Zane W. Sat . "Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation". United States. https://www.osti.gov/servlets/purl/872795.
@article{osti_872795,
title = {Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation},
author = {Bell, Zane W},
abstractNote = {A sensor for simultaneously detecting neutrons and ionizing electromagnetic radiation comprising: a sensor for the detection of gamma radiation, the sensor defining a sensing head; the sensor further defining an output end in communication with the sensing head; and an exterior neutron-sensitive material configured to form around the sensing head; wherein the neutron-sensitive material, subsequent to the capture of the neutron, fissions into an alpha-particle and a .sup.7 Li ion that is in a first excited state in a majority of the fissions, the first excited state decaying via the emission of a single gamma ray at 478 keV which can in turn be detected by the sensing head; and wherein the sensing head can also detect the ionizing electromagnetic radiation from an incident radiation field without significant interference from the neutron-sensitive material. A method for simultaneously detecting neutrons and ionizing electromagnetic radiation comprising the steps of: providing a gamma ray sensitive detector comprising a sensing head and an output end; conforming an exterior neutron-sensitive material configured to form around the sensing head of the detector; capturing neutrons by the sensing head causing the neutron-sensitive material to fission into an alpha-particle and a .sup.7 Li ion that is in a first excited state in a majority of the fissions, the state decaying via the emission of a single gamma ray at 478 keV; sensing gamma rays entering the detector through the neutron-sensitive material; and producing an output through a readout device coupled to the output end; wherein the detector provides an output which is proportional to the energy of the absorbed ionizing electromagnetic radiation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}