On some perturbation theory singularities for reactivity effects calculations

被引：0
|
作者：
Abramov, B. D. [1 ]
机构：
[1] Leypunsky Inst Phys & Power Engn IPPE, Obninsk, Russia
来源：
INTERNATIONAL CONFERENCE FOR YOUNG SCIENTISTS, SPECIALISTS, AND POSTGRADUATES ON NUCLEAR REACTOR PHYSICS 2016 (ICNRP-2016) | 2017年 / 781卷
关键词：
D O I：
10.1088/1742-6596/781/1/012020
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：
It is shown in this paper that traditional formulas for reactivity effects calculation based on diffusion approximation small-perturbation theory sometimes need updating. The corresponding specifications are provided. These are caused by the unbalance of neutron "leakages" between subdomains (zones, cells, fuel subassemblies, etc.) of the reactor as a result of perturbation. The unbalance occurs because of the jumps of relative increments of diffusion coefficients on the subdomain interfaces.
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