Development of a Detector for Measuring Effective Dose ( Equivalent ) for External Photon Exposures in Natural Environment
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概要
- 論文の詳細を見る
We have developed a new shaped NaI(Tl) scintillation detector for the direct measurement of “effective dose, (E)” or “effective dose equivalent, (HE)” for external photon exposures. These quantities related to human risk are generally difficult to be evaluated directly from measurements, because these depend not only on the energy distribution but also on the angular distribution of the gamma ray field. The present work, however, solved the problem concerning the angular dependence, by considering a detector shape that satisfies the angular response similar to human body’s. The optimum dimensions of NaI(Tl) crystal for HE and for E were determined respectively by a Monte Carlo simulation. The detector subject to HE was manufactured and tested. The angular characteristics of the developed detector indicate a fairly good coincidence with those of the theoretical values, HE. Together with the dose conversion method, so called “G(E) Function method”, it was made possible to directly measure effective dose (equivalent).
- 社団法人 日本原子力学会の論文
- 2000-03-25
著者
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TSUTSUMI Masahiro
Department of Oncological Pathology, Cancer Center, Nara Medical University
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MORIUCHI Shigeru
Division of Emergency Preparedness Technology, Nuclear Safety Technology Center
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SAITO Kimiaki
Department of Health Physics, Japan Atomic Energy Resarch Institute
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MORIUCHI Shigeru
Department of Environmental Safety, Nuclear Safety and Technology Center
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Tsutsumi Masahiro
Department Of Radiation Protection Nuclear Science Research Center Tokai Research Technology Center
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Tsutsumi Masahiro
Department Of Oncological Pathology Cancer Center Nara Medical College
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Saito Kimiaki
Department Of Environmental Safety Research Japan Atomic Energy Research Institute
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Moriuchi Shigeru
Division Of Emergency Preparedness Technology Nuclear Safety Technology Center
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Saito Kimiaki
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
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