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Title: Performance of a pressurized multiwire proportional chamber for neutron radiography

Abstract

A study was made of the effect of gas density on resolution and efficiency of a neutron sensitive multiwire proportional chamber. Increasing the density will shorten the reaction products range. A pressure vessel was designed and constructed for 4 atm thereby reducing the range of the reaction products from the neutron converter by a factor of 4, compared to 1 atm. Pressurizing the chamber to 4 atm resulted in a spatial resolution of 1mm under the most favorable operating conditions. For the type of neutron converters used improving the efficiency is limited to a choice of material. Two different materials were tried, gadolinium and boron, with efficiencies of 6.3 and 2.3%, respectively.

Authors:
Publication Date:
Research Org.:
California Univ., Berkeley (USA). Lawrence Berkeley Lab.
OSTI Identifier:
5936785
Report Number(s):
LBL-9316
TRN: 79-018640
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Thesis
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; MULTIWIRE PROPORTIONAL CHAMBERS; RESOLUTION; SENSITIVITY; PERFORMANCE; SPECIFICATIONS; MEASURING INSTRUMENTS; PROPORTIONAL COUNTERS; RADIATION DETECTORS; 440104* - Radiation Instrumentation- High Energy Physics Instrumentation

Citation Formats

Director, B. Performance of a pressurized multiwire proportional chamber for neutron radiography. United States: N. p., 1979. Web. doi:10.2172/5936785.
Director, B. Performance of a pressurized multiwire proportional chamber for neutron radiography. United States. https://doi.org/10.2172/5936785
Director, B. Fri . "Performance of a pressurized multiwire proportional chamber for neutron radiography". United States. https://doi.org/10.2172/5936785. https://www.osti.gov/servlets/purl/5936785.
@article{osti_5936785,
title = {Performance of a pressurized multiwire proportional chamber for neutron radiography},
author = {Director, B.},
abstractNote = {A study was made of the effect of gas density on resolution and efficiency of a neutron sensitive multiwire proportional chamber. Increasing the density will shorten the reaction products range. A pressure vessel was designed and constructed for 4 atm thereby reducing the range of the reaction products from the neutron converter by a factor of 4, compared to 1 atm. Pressurizing the chamber to 4 atm resulted in a spatial resolution of 1mm under the most favorable operating conditions. For the type of neutron converters used improving the efficiency is limited to a choice of material. Two different materials were tried, gadolinium and boron, with efficiencies of 6.3 and 2.3%, respectively.},
doi = {10.2172/5936785},
url = {https://www.osti.gov/biblio/5936785}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {6}
}