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dc.contributor.authorKiadtisak Saenboonruangen_US
dc.contributor.authorAnawat Rittirongen_US
dc.contributor.authorKhem Chirapatpimolen_US
dc.contributor.authorThiraphat Vilaithongen_US
dc.description.abstract1H- or 4He-contained gas mixtures are usually used to detect fast neutrons, which relies on elastic scattering between fast neutrons and light gas molecules. In this research, gas mixtures of 4He/CO2 (80:20 and 70:30) and 4He/CO2/C4H10 (70:23:7) were flowed through a 10 cm×10 cm triple-Gas Electron Multiplier (GEM) detector at a constant flow rate of 3.0 L/hr in order to detect fast neutrons. Comparisons of relative efficiencies, relative gains, and detection uniformity for all gas types were investigated by measuring signal counts and signal amplitudes. Results showed that a gas mixture of 4He/CO2 (80:20) had the highest relative efficiency and relative gains amongst all gas mixture types. In terms of detection uniformity, detection efficiency at the center of the active area was approximately 20% higher than areas close to the detector edges. Details of basic knowledge of GEM, experimental procedures, results and discussion are included in this article.en_US
dc.publisherScience Faculty of Chiang Mai Universityen_US
dc.titleComparative Study of a GEM-based Fast Neutron Detector Using 4He/CO2 and 4He/CO2/C4H10 Gas Mixturesen_US
article.title.sourcetitleChiang Mai Journal of Scienceen_US
article.volume44en_US of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.en_US of Physics, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.en_US Center of Excellence in Physics, CHE, Bangkok, 10400, Thailand.en_US
Appears in Collections:CMUL: Journal Articles

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