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2003 Fiscal Year Final Research Report Summary

Construction of the new dosimetry system instead of DS86 according to the joint study with US and analysis of radiation effects

Research Project

Project/Area Number 13480169
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境影響評価(含放射線生物学)
Research InstitutionHiroshima University

Principal Investigator

HOSHI Masaharu  HIROSHIMA UNIVERSITY, Research Institute for Radiation Biology and Medicine, Professor, 原爆放射線医科学研究所, 教授 (50099090)

Co-Investigator(Kenkyū-buntansha) ENDO Satoru  Hiroshima University, Graduate School of Engineering Professor, Associate, 大学院・工学研究科, 助教授 (90243609)
TAKADA Jun  Hiroshima University, Faculty of Medical Sciences Sapporo Medical University, Professor, 医学部, 教授 (00274134)
OHTAKI Megu  Hiroshima University, Research Institute for Radiation Biology and Medicine, Professor, 原爆放射線医科学研究所, 教授 (20110463)
Project Period (FY) 2001 – 2003
Keywordsatomic bomb / neutron / DS86 / radiation dose / atomic bomb survivor's registry / DS02 / gamma-ray dose / Europium 152
Research Abstract

Reevaluation of atomic bomb doses for the survivors in Hiroshima and Nagasaki which was named as "Dosimetry system 1986 (DS86)" have been performed by the effort of US-Japan joint study. Last year in Mach 2003, the senior committee was held in Tokyo and new dosimetry system 2002 (DS02) was approved. There were two major points in this reevaluation study. One was the difference between DS86 and Eu-152 data at long distances (more than 1km). Sometimes the data were 5-10 times larger than DS86 estimation. The other was the difference between the same Eu data and DS86 at the short distance. To the contrary, the Eu-152 data are smaller than the DS86. The long distance problem was solved according to the intercomparison study of Eu-152 and C1-36 using 18 samples, which were stored at Research Institute for Radiation Biology and Medicine, Hiroshima University. The plan was proposed by this head investigator. Conclusion was simple, because the data were reduced and agreed with DS86. The samples used were about 1kg, which were about 10 times heavier than before and ultra low background gamma-ray measurement system in Ogoya of Kanazawa University was used by Dr. Komura. These were much better improvements of the measurements than before. Maybe due to background gamma-ray's contamination in Eu-152 gamma-rays used for measurements, the data reduced. The short distance problem was solved to elevate the explosion height 20m.
However, a Nature paper indicating Ni-63 data was published on 31 July 2003 without any permission to US and Japanese working groups. It said that the problem of neutron discrepancy was solved by the Ni-63 measurements, however, it is solved by the intercomparison study and the other information. Both sides sent Nature their addendum in December 2003 and Nature responded in March 2004. We are now waiting results.

  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] M.Hoshi: "Radiation Exposure Caused by Nuclear Tests by the Former Soviet Union and China, and Its Effect on Health"Hiroshima Research News. 3(3). 2-4 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Takada: "Directional Distribution of Radiation around an Accident at a Uranium Fuel Factory in Tokai-mura,1999"J.Radiat.Res.. 42. 47-55 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.L.Fleisher: "Hiroshima neutron fluence on a glass button from near ground zero"Health Physics. 81(6). 720-723 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Hoshi: "I-129 and I-131 ground deposition densities are correlated in Belorussian settlements contaminated following the Chernobyl accident"Chernobyl : Message for the 21^<st> Century. eds. by Yamashita, S., Shibata, Y., Hoshi, M., Fujimura, K.Elsevier. 115-120 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Endo: "Neural Networks for the Neutron Spectrum Determination Based on the Foil Activation Method"Jpn.J.Appl.Phys.. 41. 2191-2194 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Katayama: "Reassessment of the Cancer Mortality Risk among Hiroshima Atomic-Bomb Survivors Using a New Dosimetry System, ABS2000D, Compared with ABS93D"J.Radiat.Res.. 43. 53-63 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shizuma: "Measurement of Residual ^<60>Co Activity Induced by Atomic-bomb Neutron in Nagasaki and Background Contribution by Environmental Neutrons"J.Radiat.Res.. 43. 387-396 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 武市宣雄: "広島の原爆被爆者甲状腺細胞にみられた微小核-放射線による影響か。セミパラチンスクの症例も加えて-"広島医学. 55(3). 198-201 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 星 正治: "放射線診療からの放射線影響.平成14年度公開シンポジウム「放射線診療における被ばくと対策-国民の不安に答える-」"医療放射線防護Newsletter. 36. 78-80 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shizuma: "Measurement of Residual ^<152>Eu Activity Induced by Atomic-bomb Neutron in Nagasaki and the Contribution of Environmental Neutrons to This Activity"J.Radiat.Res.. 44. 133-139 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.MacDonald: "Use of glazes on porcelain from near ground zero to measure Hiroshima neutron fluence"Health Physics. 85(4). 428-432 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Zhunussova: "Analysis of Pancreas Cancer Mortality Among Atomic Bomb Survivors in Hiroshima, 1968-1997"長崎医学会雑誌、第43回原子爆弾後障害研究会講演集. 77巻. 262-265 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Huber: "^<36>Cl measurements in Hiroshima granite samples as part of an international intercomparison study"Radiation Environmental Biophysics. 42. 27-32 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Hoshi: "Radiation Exposure Caused by Nuclear Tests by the Former Soviet Union and China, and Its Effect on Health"Hiroshima Research News. 3(3). 2-4 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Takada: "Directional Distribution of Radiation around an Accident at a Uranium Fuel Factory in Tokai-mura"J.Radiat.Res.. 42. 47-55 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.L.Fleisher: "Hiroshima neutron fluence on a glass button from near ground zero"Health Physics. 81(6). 720-723 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Hoshi: "I-129 and I-131 ground deposition densities are correlated in Belorussian settlements contaminated following the Chernobyl accident"Chernobyl : Message for the 21^<st> Century. (eds. by Yamashita, S., Shibata, Y., Hoshi, M., Fujimura, K.) (Elsevier). 115-120 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Endo: "Neural Networks for the Neutron Spectrum Determination Based on the Foil Activation Method"Jpn.J.Appl.Phys.. 41. 2191-2194 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Katayama: "Reassessment of the Cancer Mortality Risk among Hiroshima Atomic-Bomb Survivors Using a New Dosimetry System, ABS2000D Compared with ABS93D"J.Radiat.Res.. 43. 53-63 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Shizuma: "Measurement of Residual ^<69>Co Activity Induced by Atomic-bomb Neutron in Nagasaki and Background Contribution by Environmental Neutrons"J.Radiat.Res.. 43. 387-396 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N.Takeichi: "Observation of micronuclei in the thyroid tissue of the atomic bomb survivors in Hiroshima -radiation effects? -in addition to Semipalatinsk case -"J.Hiroshima Med.Ass.. 55(3). 198-201 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Hoshi: "Radiation effects from the view point of diagnosis by radiology. 2002 Open Symposium "Radiation exposure and its countermeasure", the 9^<th> panel discussion in Matsuyama "To consider exposure for women""Newsletter of Japan Association on Radiological Protection in Medicine. 36. 78-80 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Shizuma: "Measurement of Residual ^<152>Eu Activity Induced by Atomic-bomb Neutron in Nagasaki and the Contribution of Environmental Neutrons to This Activity"J.Radiat.Res.. 44. 133-139 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.MacDonald: "Use of glazes on porcelain from near ground zero to measure Hiroshima neutron fluence"Health Physics. 85(4). 428-432 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Zhunussova: "Analysis of Pancreas Cancer Mortality Among Atomic Bomb Survivors in Hiroshima"Nagasaki Med.J.. 77. 262-265 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Huber: "^<36>Cl measurements in Hiroshima granite samples as part of an international intercomparison study"Radiation Environmental Biophysics. 42. 27-32 (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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