APPLICABILITY OF THE CONVECTION-DIFFUSION MECHANISM FOR MODELING MIGRATION OF CS-137 AND SR-90 IN THE SOIL

被引：31

作者：

KONSHIN, OV ^{[1
]}

机构：

[1] BYELORUSSIAN STATE UNIV, DEPT NUCL PHYS, MINSK 220080, BELORUSSIA, USSR

来源：

HEALTH PHYSICS | 1992年 / 63卷 / 03期

关键词：

CS-137; MODELS; SR-90; DIFFUSION;

D O I：

10.1097/00004032-199209000-00004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The convection-diffusion equation is analyzed as a basis for modeling the migration of radionuclides. To describe the experimental data adequately within the framework of the diffusion-convection equation, it is necessary to introduce migration parameters which increase as the radionuclides penetrate further down through the soil layer and decrease as the observation time lengthens. The assumption that sorption processes in the migration of Cs-137 and Sr-90 are linear seems to be unjustified. The stochastic model helps us to overcome the main problems of the diffusion-convection approach, but it needs to be tested on a wider range of experimental material.

引用

页码：291 / 300

页数：10

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