Molecular dynamics (MD) methods have been utilized to study the formation of vacancy clusters created by displacement cascades in a-Fe containing concentrations of substitutional He atoms varying from 1-5%. These He concentrations are not necessarily intended to represent specific conditions within a fusion reactor (average end-of-life He concentrations in the first wall are expected to be on the order of 0.15%), but they provide an opportunity to investigate the effects of substantial amounts of He on cascade processes and microstructure development under damage producing conditions.
Revised: September 28, 2016 |
Published: October 1, 2007
Citation
Gao F., H.L. Heinisch, and R.J. Kurtz. 2007.The Formation and Stability of He-Vacancy Clusters within Displacement Cascades in a-Fe. In Fusion Materials Semiannual Progress Report for the Period Ending June 30, 2007, edited by GR Nardella. 67-71. DOE/ER-0313/42. Oak Ridge, Tennessee:Oak Ridge National Laboratory.PNNL-SA-56823.