α-particle spectrometer based on xenon gas ionization chamber using coplanar electrodes

A parallel plate gas ionization chamber with coplanar electrodes was designed and developed to be used as an α-particle spectrometer measuring low level α-emission rates in environmental samples from the vicinity of nuclear power plants. The chamber was filled with a 3 atm gas mixture of Xe + 0.7% C...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2019-05, Vol.925, p.123-127
Main Authors: Hasebe, N., Miyajima, M., Shibamura, E., Hitachi, A., Naito, M., Murakami, K., Kusano, H., Matias-Lopes, J.A., Dmitrenko, V.V.
Format: Article
Language:English
Subjects:
[formula omitted]-ray spectrometer
Coplanar electrode
Xenon gas ionization chamber
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Summary:A parallel plate gas ionization chamber with coplanar electrodes was designed and developed to be used as an α-particle spectrometer measuring low level α-emission rates in environmental samples from the vicinity of nuclear power plants. The chamber was filled with a 3 atm gas mixture of Xe + 0.7% CH4. Its performance was investigated using a mixed α-particle source (237Np, 241Am, and 244Cm). An excellent energy resolution of 59 keV (1.0%) in fwhm for 5.81 MeV 244Cm α-particles was obtained, which is enough to identify major sources of alpha radioisotopes (238U, 235U, 237Np, 239Pu, 238Pu, 241Am, 244Cm) to be found near nuclear power plants.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2019.01.079