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

本研究通过对前苏联塞米巴拉金斯克核武器试验场周围人群的讨论，对其进行了外剂量重建，并对辐照后的砖体发光剂量测定和牙釉质电子自旋共振进行了研究。研究了日光照射对牙釉质ESR剂量学的影响。对于g□=2.0018,50-70 kJ/cm2的太阳光剂量相当于1 Gy的y剂量。我们了解太阳光照射对口腔中牙齿几十年的影响。除了过去的瞬态伽马射线照射外，长期暴露于口腔的阳光照射也作为ESR剂量的一部分。有一种趋势是，牙齿上的ESR剂量远低于砖状TLD剂量。据估计，Dolon村来自TLD的外剂量为0.71+ _4.14 Gy，另一方面，来自ESR的两名Dolon村居民（59岁和58岁）的外剂量估计为0.1 -0.2 Gy。此外，他们在1949年第一次核爆炸时的年龄估计约为10岁。必须确认居民的居住记录。分析了2002年地方调查发现的地表核爆炸及其周边的长期核危害。陨石坑直径为30 m，表明这是一次核爆，输出功率为0.1-0.3 kt。这与1996年俄罗斯原子能部和国防部报告的1961年苏联曲调实验年表上的实验相对应。地表核爆炸后的放射性沉降物是这些居住区居民的主要辐射源。我们认为发展辐射防护计算机系统作为核抗灾措施，是今后国家核恐怖主义措施防护基础指标的一个方向。在前苏联核武器试验场及其周围进行的研究工作应有助于实现这一目的。少

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