Edinburgh Research Explorer

Molecular dynamics and object kinetic Monte Carlo study of radiation-induced motion of voids and He bubbles in bcc iron

Research output: Contribution to journalArticle

Related Edinburgh Organisations

Open Access permissions

Open

Original languageEnglish
Article number104106
Number of pages6
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume87
Issue number10
DOIs
Publication statusPublished - 12 Mar 2013

Abstract

We show that voids adjacent to radiation damage cascades can be moved in their entirety by several lattice spacings. This is done using molecular dynamics cascade simulations in iron at energies of 1-5 keV. An equation describing this process is added to an an object kinetic Monte Carlo (OKMC) code to allow study of the mechanism at longer time scales. The mechanism produces an enhancement of void diffusion by two orders of magnitude from 1 x 10(-22) cm(2)/s to 3 x 10(-20) cm(2)/s. Repeating the study on He bubbles shows that the movement is damped by the presence of helium in the void. DOI: 10.1103/PhysRevB.87.104106

    Research areas

  • COMPUTER-SIMULATION, DISPLACEMENT CASCADES, DEFECT PRODUCTION, DAMAGE EVOLUTION, ALPHA-IRON, FE, HELIUM, IRRADIATION, METALS

Download statistics

No data available

ID: 11320591