Correlation relations for estimating the content of plutonium isotopes in fallout due to the Chernobyl accident

被引：0
|
作者：
Rudak, E. A. [1 ]
El'mansuri, A. M. [1 ]
Yachnik, O. I. [1 ]
机构：
[1] Nat Acad Sci Belarus, Inst Phys, Minsk, BELARUS
来源：
ATOMIC ENERGY | 2007年 / 103卷 / 04期
关键词：
Plutonium; Fission Product; Chernobyl Accident; Radioactive Contamination; Reactor Fuel;
D O I：
10.1007/s10512-007-0127-7
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The possibility of determining the total alpha activity A(Pu-239,Pu-240) of Pu-239 + Pu-240 according to the gamma radiation of Ru-103 and Ru-106 is examined. The statistical properties of the experimental ratios of the activities rho = A(Ru-106)/A(Ru-103) are investigated. The distribution of the experimental ratios is similar to the theoretical ratios for fuel and close to a Gaussian distribution with average value < p > = 0.22 and standard deviation Delta similar to 0.06. This ratio is used to obtain a relation for estimating A(Pu-239,Pu-240) from the gamma activity A(Ru-103). A theoretical analysis is made of the experimental data for the southern raions of Gomel oblast. It is shown that given a good statistical sample of measurements of the gamma activity of Ru-103 it is possible to estimate the average value of the gamma activity A(Pu-239,Pu-240) and with probability 0.95 the interval of the possible values of this activity.
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收藏
页码：809 / 814
页数：6
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