On approach to model stabilization of anomalous distribution of concentration of radiation defects in a multilayer structure

Abstract

Purpose

The purpose of this paper is to introduce a model of redistribution of point radiation defects, interaction between themselves and redistribution of their simplest complexes in a multilayer structure. The model gives a possibility to qualitatively describe nonmonotonicity of distributions of concentrations of radiation defects on interfaces between layers of the structure, which recently was found experimentally. To take into account the nonmonotonicity, the authors complement the model for the analysis of distribution of concentration of radiation defects, which were recently used in the literature. To analyze the model, the authors used an approach of solution of boundary problems, which could be used without crosslinking of solutions on interfaces between layers of the considered multilayer structures.

Design/methodology/approach

The authors introduce a model of redistribution of point radiation defects, interaction between themselves and redistribution of their simplest complexes in a multilayer structure. The model gives a possibility to qualitatively describe nonmonotonicity of distributions of concentrations of radiation defects on interfaces between layers of the structure, which recently was found experimentally. To take into account the nonmonotonicity, the authors complement the model for analysis of distribution of concentration of radiation defects, which were recently used in the literature. To analyze the model, the authors used an approach of solution of boundary problems, which could be used without crosslinking of solutions on interfaces between layers of the considered multilayer structures.

Findings

The authors obtain better agreement of obtain results in comparison with recently obtained results in the literature.

Originality/value

The results are original.

Citation

Pankratov, E.L. (2018), "On approach to model stabilization of anomalous distribution of concentration of radiation defects in a multilayer structure", Multidiscipline Modeling in Materials and Structures, Vol. 14 No. 5, pp. 984-998. https://doi.org/10.1108/MMMS-09-2017-0103