Retrospective Estimation of the Spatial Dose Distribution and the Number of Fissions in Criticality Accident Using Area Dosimeters
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概要
- 論文の詳細を見る
A practical method is proposed for retrospective estimation of the spatial dose distribution and the number of fissions in a typical criticality accident where there is a single radiation source in an accessible room. In this method, two kinds of low-fading and tissue-equivalent dosimeters are used as area dosimeters: an alanine dosimeter and a thermoluminescence dosimeter made of enriched lithium tetra borate (7Li211B4O7). The procedure of the method consists of four parts: (1) dosimetry using area dosimeters (2) search for the center of the radiation source, (3) estimation of the spatial dose distribution in the room, and (4) estimation of the number of fissions in the accident. Dosimetry of criticality accident situations simulated at the TRACY facility demonstrates the practicability of the method. Although a post-hoc analysis in principle, this method gives useful information on the magnitude and hazard level of the accident to determine the strategy of radiation emergency medicine and other post-accident measures if the area dosimeters are retrieved immediately after the accident.
- 社団法人 日本原子力学会の論文
- 2007-01-25
著者
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YAMANE Yoshihiro
Nagoya University
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SONO Hiroki
Nuclear Science Research Institute, Tokai Research and Development Center, Japan Atomic Energy Agenc
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OHNO Akio
Nuclear Science Research Institute, Tokai Research and Development Center, Japan Atomic Energy Agenc
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KOJIMA Takuji
Takasaki Radiation Chemistry Research Institute, Japan Atomic Energy Agency
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Ohno Akio
Nuclear Science Research Institute Tokai Research And Development Center Japan Atomic Energy Agency
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Kojima Takuji
Takasaki Radiation Chemistry Research Institute Japan Atomic Energy Agency
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Kojima Takuji
Takasaki Radiation Chemistry Research Establishment Japan Atomic Energy Research Institute
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Sono Hiroki
Nuclear Science Research Institute Tokai Research And Development Center Japan Atomic Energy Agency
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