A Review of Forty-Five Years Study of Hiroshima Atomic Bomb Survivors I. DOSIMETRY Thermoluminescence Dosimetry of Gamma Rays Using Ceramic Samples from Hiroshima and Nagasaki: A Comparison with DS86 Estimates

نویسندگان

  • TSUNETO NAGATOMO
  • YONETA ICHIKAWA
  • MASAHARU HOSHI
چکیده

*長友恒 人 ,市 川米太:奈 良教育大学物理教室,奈 良 市高畑町 〒630 **星 正治:広 島大学原爆放射能医学研究所,広 島市 南区霞1-2-3 〒734 Thermoluminescence dosimetry/Gamma rays/Hiroshima and Nagasaki/Atomic bomb This study reports gamma-ray doses measured using thermoluminescence (TL)dosimetry of atomic-bomb exposed ceramic samples from Hiroshima and Nagasaki. Advances in the dosimetry of TL-sensitive minerals in the field of TL dating of archaeological and geological materials made it possible to measure a radiation dose of 10-2 Gy. Ceramic samples such as tiles and bricks were collected from locations between 523 and 2,453 m from the hypocenter in Hiroshima and from between 731 and 1,565 m in Nagasaki. The gamma-ray dose estimates derived from these samples are compared with estimates from DS86. A significant discrepancy was noted between the doses measured for samples from Hiroshima and DS86 values. One possible cause of this discrepancy might be a secondary gamma-ray dose related to the neutron dose.

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تاریخ انتشار 2006