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Title: Application of A150-plastic equivalent gases in microdosimetric measurements

Abstract

Neutron dosimetry measurements with ionization chambers, for the most part, employ tissue equivalent plastic-walled cavities (Shonka A150) filled with either air or a methane-base tissue-like gas. The atomic composition of TE-gas and A150 plastic are not matched and are quite dissimilar from muscle. Awschalom and Attix (1980) have partially resolved the problem by formulating a novel A150-plastic equivalent gas. This establishes a homogeneous wall-gas cavity dosimeter for neutron measurements and confines the necessary corrections to the applications of kerma ratios. In this report, we present measurements of applications of two A150-plastic equivalent gases in a low pressure spherical proportional counter. Gas gains and alpha-particle resolutions were determined. For these A150-mixtures as well as a methane-based TE-gas and an Ar-CO/sub 2/ mixture, we report measurements of event size distributions from exposure to a beam of 14.8 MeV neutrons.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Wisconsin Univ., Madison (USA). Dept. of Medical Physics
OSTI Identifier:
5456213
Report Number(s):
DOE/EV/01105-284
ON: DE82009368; TRN: 82-011938
DOE Contract Number:  
AS02-76EV01105
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; NEUTRON DOSIMETRY; IONIZATION CHAMBERS; TISSUE-EQUIVALENT MATERIALS; FAST NEUTRONS; GASES; KERMA; MICRODOSIMETRY; BARYONS; DOSIMETRY; ELEMENTARY PARTICLES; FERMIONS; FLUIDS; HADRONS; MATERIALS; MEASURING INSTRUMENTS; NEUTRONS; NUCLEONS; RADIATION DETECTORS; 655003* - Medical Physics- Dosimetry; 654003 - Radiation & Shielding Physics- Neutron Interactions with Matter

Citation Formats

DeLuca, Jr., P. M., Higgins, P. D., Pearson, D. W., Schell, M., and Attix, F. H. Application of A150-plastic equivalent gases in microdosimetric measurements. United States: N. p., 1981. Web. doi:10.2172/5456213.
DeLuca, Jr., P. M., Higgins, P. D., Pearson, D. W., Schell, M., & Attix, F. H. Application of A150-plastic equivalent gases in microdosimetric measurements. United States. https://doi.org/10.2172/5456213
DeLuca, Jr., P. M., Higgins, P. D., Pearson, D. W., Schell, M., and Attix, F. H. 1981. "Application of A150-plastic equivalent gases in microdosimetric measurements". United States. https://doi.org/10.2172/5456213. https://www.osti.gov/servlets/purl/5456213.
@article{osti_5456213,
title = {Application of A150-plastic equivalent gases in microdosimetric measurements},
author = {DeLuca, Jr., P. M. and Higgins, P. D. and Pearson, D. W. and Schell, M. and Attix, F. H.},
abstractNote = {Neutron dosimetry measurements with ionization chambers, for the most part, employ tissue equivalent plastic-walled cavities (Shonka A150) filled with either air or a methane-base tissue-like gas. The atomic composition of TE-gas and A150 plastic are not matched and are quite dissimilar from muscle. Awschalom and Attix (1980) have partially resolved the problem by formulating a novel A150-plastic equivalent gas. This establishes a homogeneous wall-gas cavity dosimeter for neutron measurements and confines the necessary corrections to the applications of kerma ratios. In this report, we present measurements of applications of two A150-plastic equivalent gases in a low pressure spherical proportional counter. Gas gains and alpha-particle resolutions were determined. For these A150-mixtures as well as a methane-based TE-gas and an Ar-CO/sub 2/ mixture, we report measurements of event size distributions from exposure to a beam of 14.8 MeV neutrons.},
doi = {10.2172/5456213},
url = {https://www.osti.gov/biblio/5456213}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}