Microdosimetry on a Mini-Reactor UTR-KINKI for Educational Uses and Biological Researches

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概要

• 論文の詳細を見る

• Microdosimetry study has been carried out at the education and research mini-reactor of Kinki University (UTR-KINKI) using a tissue equivalent gas proportional counter (TEPC). The microdosimetric single event spectra for 0.5, 1, 2, 3 and 5μm site sizes were obtained in the lineal energy range from 1 to 1000keV/μm. Neutron and gamma-ray fractional doses were estimated from the single event spectra. The neutron dose fraction was varied from 35 to 55% for 0.5 to 5μm site size. The averaged lineal energy, y_D, for each site size was likewise estimated and found to be dependent on the site size. The averaged lineal energy for neutron was slightly larger than that of the fission neutrons from ^<252>Cf, and the averaged lineal energy for gamma-ray had similar site-size-dependence of 25 keV gamma-rays and 250kV X-rays. Relative biological effectiveness was found to be 4.1±0.13 for UTR-KINKI using Tilikidis's 2 Gy-response function. The estimated RBE for UTR-KINKI neutrons is quite close to the previous biological experimental value of 4.3±0.6 for micronucleated cells in gill cell of Medaka and 4.6±0.5 for induction of lymphocyte apoptosis in the thymus of ICR mice.

• 日本放射線影響学会の論文
• 2009-01-16

著者

• MURATAKA Ayanori

  Mechanical System Engineering, Graduate School of Engineering Hiroshima University

• KOJIMA Yasuaki

  Mechanical System Engineering, Graduate School of Engineering Hiroshima University

• HOSHI MASAHARU

  Research Institute for Radiation Biology and Medicine, Hiroshima University

• 星 正治

  広島大学原爆放射能医学研究所 国際放射線情報センター

• 星 正治

  岡山理科大学 理学部応用物理学科

• 星 正治

  広島大学・原爆放射線医科学研究所国際放射線情報センター

• 静間 清

  広島大学大学院工学研究科

• TANAKA Kenichi

  Department of Physics, School of Medicine, Sapporo Medical University

• ENDO Satoru

  Quantum Energy Applications, Graduated School of Engineering, Hiroshima University

• Tanaka Kimio

  Department Of Physics School Of Medicine Sapporo Medical University

• 松浦 正明

  広島大学大学院工学研究科

• 星 正治

  広島大学原爆放射線医科学研究所・線量測定・評価研究分野

• Tanaka Kimio

  Radiation Effect Mechanisms Research Group National Institute Of Radiological Sciences

• 遠藤 暁

  Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• Endo Satoru

  Department Of Biochemistry Cancer Institute Okayama University Medical School

• FUJIKAWA Kazuo

  Department of Life Science, Faculty of Science and Technology, Kinki University

• HORIGUCHI Tetsuo

  Atomic Energy Research Institute, Kinki University

• ITOH Tetsuo

  Atomic Energy Research Institute, Kinki University

• ONIZUKA Yoshihiko

  Department of Health Science, Kyushu University

• MURATAKA Ayanori

  Quantum Energy Applications, Graduated School of Engineering, Hiroshima University

• KOJIMA Yasuaki

  Quantum Energy Applications, Graduated School of Engineering, Hiroshima University

• SHIZUMA Kiyoshi

  Quantum Energy Applications, Graduated School of Engineering, Hiroshima University

• Endo Satoru

  Research Institute Of Radiation Biology And Medicine Hiroshima University

• Endo Satoru

  Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• Endo Satoru

  Quant. Energ. Applic. Grad. Sch. Eng. Hiroshima Univ.

• Tanaka K

  Department Of Physics School Of Medicine Sapporo Medical University

• Tanaka K

  Department Of Radiobiology Research Institute For Environmental Sciences

• Tanaka Kimio

  Dep. Of Radiobiology Inst. For Environmental Sciences

• Fujikawa K

  Department Of Life Science Faculty Of Science And Technology Kinki University

• Fujikawa K

  Kinki Univ. Higashi‐osaka Jpn

• Fujikawa Kazuo

  Department Of Life Science Faculty Of Science And Technology Kinki University

• Fujikawa K

  Faculty Of Science And Engineering Kinki University

• Endo Satoru

  Div. Environ. Biol. Res. Inst. Rad. Biol. And Med. Hiroshima University

• HOSHI M.

  RIRBM Hiroshima Univ.

• Hoshi Masaharu

  Res Inst. Nuclear Med. Biol. Hiroshima Univ.

• Itoh Tetsuo

  広島大学 工学研究科機械システム工学専攻

• Itoh Tetsuo

  Atomic Energy Research Institute Kinki University

• Hoshi Masaharu

  Research Institute For Nuclear Medecine And Biology Hiroshima University

• Shizuma Kiyoshi

  広島大学 工学研究科機械システム工学専攻

• Itoh T

  Atomic Energy Research Institute Kinki University

• Kojima Yasuaki

  Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• Horiguchi Tetsuo

  Atomic Energy Research Institute Kinki University

• Onizuka Yoshihiko

  Department Of Health Science Kyushu University

• 静間 清

  広島大学大学院工学部工学研究科

• Shizuma Kiyoshi

  Quantum Energy Applications Graduate School Of Engineering Hiroshima University

• Imanaka Tetsuji

  Res. Reactor Inst. Kyoto Univ.

• Tanaka Kimio

  Dept. Of Cancer Cytogenet. Res. Inst. Rad. Biol. &med. Hiroshima University.

• Hoshi Masaharu

  Hiroshima University

• Murataka Ayanori

  Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• Tanaka Kenichi

  Department Of Physics School Of Medicine Sapporo Medical University

• Tanaka Kenichi

  Department Of Electronic And Bioinformatics School Of Science Technology Meiji University

• Tanaka Kenichi

  Department Of Anesthesiology Emory University School Of Medicine

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