Investigation of radiation-enhanced diffusion using first-passage time

TL;DR

This paper applies the first-passage time method to model radiation-enhanced diffusion, providing an integral approach that considers entropy changes and radiation effects on diffusion coefficients, with theoretical results validated against experiments.

Contribution

It introduces a novel integral approach using first-passage time to describe radiation-enhanced diffusion, accounting for entropy and radiation effects.

Findings

Theoretical relationships for radiation effects on diffusion coefficients

Comparison shows good agreement with experimental data

Provides a new framework for modeling radiation-enhanced diffusion

Abstract

The approach the first-passage time (FPT) of a random process to a certain level is applied to the description of radiation-enhanced diffusion. This is an integral approach to describing the problem of radiation-enhanced diffusion, which does not specify the details of the process but takes into account the overall change in entropy during the process. Relationships are obtained to take into account the influence of radiation effects on the diffusion coefficient. The theoretical results obtained are compared with the experimental ones.