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Decrease of total activity with time at long distances from a nuclear accident or explosion

机译:远离核事故或爆炸的远距离总活动量随时间减少

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Two data groups were analyzed:(1) the exposure rate in the former Czechoslovakia after the Chernobyl accident in 1986,and (2) the decrease of beta activity of an atmospheric fallout sample taken in Bratislava during 24 h on 30 May 1965.Both quantities decreased with the first power of time.This pattern of decrease is explained by applying the same mathematical formalism as is also used to describe the decrease in postnatal mortality with age.Following this formalism,the decrease of total activity with the first power of time could be seen as a consequence of a log-normal distribution of decay constants in the fallout.This differs slightly from earlier results that show the total activity decreasing with a power of 1.2 immediately after the nuclear explosion.
机译:分析了两个数据组:(1)1986年切尔诺贝利事故后在前捷克斯洛伐克的暴露率,(2)1965年5月30日在24小时内在布拉迪斯拉发采集的大气沉降样品的β活性降低。随着时间的一阶幂而减少。这种减少的模式可以通过使用与描述出生后死亡率随年龄的降低相同的数学形式主义来解释。遵循这种形式主义,总活动量随时间的一阶幂可以减少。这被认为是沉降物中衰减常数的对数正态分布的结果,这与早期结果略有不同,后者先前显示的结果是,核爆炸后总活动以1.2的幂下降。

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