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Title: Improved gas mixtures for gas-filled radiation detectors

Abstract

Improved binary and ternary gas mixtures for gas-filled radiation detectors are provided. The components are chosen on the basis of the principle that the first component is one molecular gas or mixture of two molecular gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a noble gas having a very small cross section at and below about 1.0 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electric field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
6720716
Assignee:
Dept. of Energy TIC; ERA-06-008092; EDB-81-017601
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; RADIATION DETECTORS; SPECIFICATIONS; ARGON; GASES; METHANE; PERFORMANCE TESTING; ALKANES; ELEMENTS; FLUIDS; HYDROCARBONS; MEASURING INSTRUMENTS; NONMETALS; ORGANIC COMPOUNDS; RARE GASES; TESTING 440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments

Citation Formats

Christophorou, L.G., McCorkle, D.L., Maxey, D.V., and Carter, J.G. Improved gas mixtures for gas-filled radiation detectors. United States: N. p., 1980. Web.
Christophorou, L.G., McCorkle, D.L., Maxey, D.V., & Carter, J.G. Improved gas mixtures for gas-filled radiation detectors. United States.
Christophorou, L.G., McCorkle, D.L., Maxey, D.V., and Carter, J.G. Fri . "Improved gas mixtures for gas-filled radiation detectors". United States.
@article{osti_6720716,
title = {Improved gas mixtures for gas-filled radiation detectors},
author = {Christophorou, L.G. and McCorkle, D.L. and Maxey, D.V. and Carter, J.G.},
abstractNote = {Improved binary and ternary gas mixtures for gas-filled radiation detectors are provided. The components are chosen on the basis of the principle that the first component is one molecular gas or mixture of two molecular gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a noble gas having a very small cross section at and below about 1.0 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electric field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {3}
}