External Dose Reconstruction of Radiation Exposure under Low Dose Rate in Long Term around Semipalatinsk Nuclear Weapon Test Site

点击翻译按钮获取中文摘要

The purpose of this study is external dose reconstruction for population around the former Soviet UnionSemipalatinsk Nuclear Weapon Test Site from discussion on thereto luminescence dosimetry on brick and electron spin resonance on tooth enamel exposed to nuclear radiation.The influence of the sun light revelation on enamel ESR dosimetry has been studied. For g □=2.0018, a dose of 50-70 kJ/cm2 for sun light is equivalent to a y dose of 1 Gy. We understand sun light irradiation influence of a tooth in the mouth for dozens of years afteryradiation exposure. In addition to past transient gamma ray radiation exposure, sun light exposure of a long term to a mouth is added as a part of ESR dose.There is a tendency that an ESR dose on a tooth is considerably lower than a brick TLD dose. External dose for Dolon village is estimated to be 0.71+_-4.14 Gy from TLD, on the other hand is estimated to be 0.l-0.2 Gy for two Dolon village inhabitants (59 years old and 58 years old) from ESR. In additi … More on, their age in the first nuclear explosion in 1949 is estimated to be about 10 years old. Confirmation of residential records of the inhabitants is necessary.We analyzed long-term nuclear hazards in and around surface nuclear explosion which we discovered bylocal investigation of 2002. The crater size of 30 m in diameter suggests a nuclear surface explosion with 0.1-0.3 kt output. This corresponds to experiments in 1961 on an experiment chronological table of the Soviet Union tunes that the Russian Atomic Energy Ministry and Department of Defense reported in 1996.Radioactive fallout after surface nuclear explosion is a main source of radiation exposure of these residence ward inhabitants. We think that development of radiation protection computer system as nucleus anti-disaster measures is demanded in future about a problem in a direction of a nation protection basis indicator of nuclear terrorism measures. Research work in and around the nuclear weapon test site of the former Soviet Union should be useful for this purpose. Less