| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-02-09 |
| タイトル |
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タイトル |
Establishment of a low dose rate 133Ba γ-ray calibration field for photon energy in the 300–400 keV range |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Tomoya Tsuj
Yoshitomi Hiroshi
Kowatari Munehiko
Fuminobu Sato
Tanimura Yoshihiko
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
A γ-ray calibration field using a sealed 133Ba source for photon energy in the 300–400 keV range was established at the Japan Atomic Energy Agency to evaluate radiation protection devices under low dose rate conditions. To suppress low-energy γ-ray components, a 2-mm lead filter was applied. The photon fluence spectrum was measured using a CdTe spectrometer and an unfolding method, yielding a spectrum with a mean energy of 321 keV. Reference air kerma rates were determined using ionization chambers calibrated in a 137Cs field, with energy correction factors applied. Spectrometry using a CeBr₃ scintillation spectrometer combined with the G(E) function method was employed to validate these corrections. Spectrum-averaged conversion coefficients were derived from the measured spectrum, indicating equivalence to the N-400 radiation quality. This field provided air kerma rates from 0.22 to 2.13 μGy h−1, suitable for testing devices used in environmental monitoring and nuclear emergency response. |
| 書誌情報 |
Radiation Protection Dosimetry
発行日 2026-02
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| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1093/rpd/ncag002 |
