Konshin O V
Nuclear Physics Department, Byelorussian State University, Minsk, USSR.
Health Phys. 1992 Sep;63(3):301-6. doi: 10.1097/00004032-199209000-00005.
The applicability of traditional mathematical models is studied on the basis of 3 y of observation of the vertical migration of 137Cs fallout after the Chernobyl accident. The most accurate description of the dependence of the radionuclide concentration on the depth of the soil layer is given by a lognormal distribution. The parameters of this distribution are determined and shown to be a solution to the Fokker-Planck equation, a special case of which is the diffusion-convection transport equation.
基于对切尔诺贝利事故后137Cs沉降物垂直迁移3年的观测，研究了传统数学模型的适用性。放射性核素浓度与土壤层深度之间的依赖关系，用对数正态分布描述最为准确。确定了该分布的参数，并证明其是福克-普朗克方程的一个解，该方程的一个特殊情况是扩散-对流输运方程。
