Atomic Bomb Radiation Dosimetry in Hiroshima and Nagasaki and its Meanings

Dosimetry system 2002 (DS02) has been established according to the collaboration among many institutions. DS02 calculates organ doses of atomic bomb survivors. At first emitted neutron and gamma-ray energy spectra from the Hiroshima and Nagasaki atomic bombs were calculated and were used to calculate air transport, absorption and transmission through Japanese houses. Finally organ doses of each atomic bomb survivor were obtained. On the other hand bricks and roof tiles were collected and gamma-ray doses were measured. Similarly iron, granite and copper samples were collected and neutron induced radioactivities such as Co-60 and Eu-152. In this paper obtained results of DS02 and the background of the construction of DS02 are shown. Among those data only Co-60 data were not agreed with DS02 at the longer distances. Here we introduce new Co-60 measurements, of which data show good agreement with DS02 at longer distances

HOSHI Masaharu;  ENDO Satoru;  TANAKA Kenichi;  IMANAKA Tetsuji;  HULT Mikael;  GASPARRO Joël;  MARISSENS Gerd; 

2011-03-08

Japan Radiation Research Society

JRC63803

https://publications.jrc.ec.europa.eu/repository/handle/JRC63803,