Reassessment of gamma doses from the atomic bombs in Hiroshima and Nagasaki
Reassessment of gamma doses from the atomic bombs in Hiroshima and Nagasaki has been carried out with thermoluminescent measurements of ceramic materials, such as bricks and decorative tiles, which were collected from buildings that remain as they were at the time of the explosions. The thermoluminescent measurements were performed using thermoluminescent dating techniques generally used in archaeology. Annual background dose rates from natural radionuclides in the ceramic materials and from environmental radiation including cosmic rays were determined with commercially available thermoluminescent detectors. A time-zero point at the original firing of the ceramic materials was estimated from the age of the buildings given in the register book. Total background dose was evaluated by multiplying the period between the time-zero point and the time of measurement by the annual dose rate. The resultant gamma doses in Hiroshima and Nagasaki are given as a function of distance from ground zero and are compared with the DS86 (Dosimetry System 1986) and the T65D (Tentative 1965 Dose) gamma doses.
- Research Organization:
- National Institute of Radiological Sciences, Chiba-shi (Japan)
- OSTI ID:
- 5314107
- Journal Information:
- Radiat. Res.; (United States), Vol. 113:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
A-BOMB SURVIVORS
RADIATION DOSES
BUILDING MATERIALS
THERMOLUMINESCENT DOSIMETRY
BOMBS
GAMMA RADIATION
HIROSHIMA
NAGASAKI
NUCLEAR EXPLOSIONS
ASIA
DOSES
DOSIMETRY
ELECTROMAGNETIC RADIATION
EXPLOSIONS
HUMAN POPULATIONS
IONIZING RADIATIONS
JAPAN
MATERIALS
POPULATIONS
RADIATIONS
WEAPONS
560151* - Radiation Effects on Animals- Man