Jump to main content
Jump to site search

Issue 32, 2016
Previous Article Next Article

Atomic simulation of helium trapping in displacement cascades

Author affiliations

Abstract

A molecular dynamics method is applied to simulate displacement cascades in He-doped α-Fe and predominant analytical attention is paid to the clustering of He-participating defect clusters to reveal the trapping behaviors of helium atoms in radiation processes. It is found that the radiation temperature, PKA energy and helium concentration play complex roles in defect production. An increase in helium atoms increases the number of defects and the increasing rate is greatly enhanced with the increase in PKA energy and initial radiation temperature. Cascade collisions significantly promote helium trapping through two types of mechanism, thermally activated self-trapping and cascade defect-created capture. Thermally activated self-trapping rather than cascade defect capturing causes helium trapping in displacement cascades.

Graphical abstract: Atomic simulation of helium trapping in displacement cascades

Back to tab navigation

Article information


Submitted
04 Jan 2016
Accepted
29 Feb 2016
First published
02 Mar 2016

RSC Adv., 2016,6, 27113-27118
Article type
Paper

Atomic simulation of helium trapping in displacement cascades

N. Hu, H. Deng, C. Wang and W. Hu, RSC Adv., 2016, 6, 27113
DOI: 10.1039/C6RA00180G

Social activity

Search articles by author

Spotlight

Advertisements