Gamma-ray Energy Spectra Observed around a Nuclear Reactor
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- 中島 敬行
- Department of Nuclear Engineering, Faculty of Engineering, Nagoya Univ
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- 湊 進
- Department of Nuclear Engineering, Faculty of Engineering, Nagoya Univ
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- 川野 実
- Department of Nuclear Engineering, Faculty of Engineering, Nagoya Univ
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- 辻本 忠
- Reseach Reactor Institute, Kyoto Univ
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- 桂山 幸典
- Reseach Reactor Institute, Kyoto Univ
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Leakage γ-ray energy spectra up to about 9 MeV were measured by using of a 3"φ × 3"L NaI (TI) scintillation counter at two points in the reactor room of KUR (Kyoto University Reactor), and leakage low energy γ-ray (between 10 and 200 keV) spectra were also measured at the reactor power of 5 MW by using of a measuring system which consisted of a 25 mmφ × 2 mm thick NaI (TI) scintillation counter, a collimator, and a logarithmic amplifier.<BR> Distinct peaks were not found in the observed γ-ray energy spectra up to 9 MeV except O W. In the case of O W, the distributions in the spectra were not found in the energy range above 2.8 MeV.<BR> Peaks at the energies about 200 keV and between 60 and 100 keV were found in many low energy γ-ray spectra. The energy of the former peak corresponds nearly to single back-scattered γ-rays (scattering angle θ, 180°), and the latter one to multiple-scattered. The low energy γ-rays which leaked directly through the shielding wall of the reactor were observed below 30 keV. It was considered that low energy γ-rays leaked through the shielding wall were comparatively weak in intensity, and that high energy γ-rays, when leaked, became to low energy by scattering in the air.
収録刊行物
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- Journal of Radiation Research
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Journal of Radiation Research 12 (3-4), 138-147, 1971
Journal of Radiation Research 編集委員会
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詳細情報 詳細情報について
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- CRID
- 1390282680193538816
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- NII論文ID
- 110002323022
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- NII書誌ID
- AA00705792
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- COI
- 1:CAS:528:DyaE38Xkt1Oqtrc%3D
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- ISSN
- 13499157
- 04493060
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- PubMed
- 5149861
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可