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Nucleation and Growth of Defects in He irradiated Fe using Rate Theory and Kinetic Monte Carlo Methods

Published online by Cambridge University Press:  26 February 2011

Christophe Juan Ortiz ,
Maria Jose Caturla ,
Chu Chun Fu  and
Francois Willaime
Christophe Juan Ortiz
Affiliation:
[email protected], University of Alicante, Fisica Aplicada, Carretera San Vicent del Raspeig s/n, Alicante, Alicante, 03690, Spain, 0034965909599
Maria Jose Caturla
Affiliation:
[email protected], University of Alicante, Departamento de Fisica Aplicada, Spain
Chu Chun Fu
Affiliation:
[email protected], CEA/Saclay, Service de Recherches de Métallurgie Physique, France
Francois Willaime
Affiliation:
[email protected], CEA/Saclay, Service de Recherches de Métallurgie Physique, France
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Abstract

He desorption in Fe was studied using rate theory and kinetic Monte Carlo models. A good fit to experimental observations was obtained with a migration energy of 1.1 eV and a formation energy of 1.6 eV for the single vacancy. These results could be explained by the presence of traps/impurities in experiments. Simulations show that the release of He during annealing is mainly due to the dissociative mechanism (Frank-Turnbull) and the release of Hei from He-V clusters.

Keywords

defectsdiffusionHe
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 908: Symposium OO – Growth, Modification, and Analysis by Ion Beams at the Nanoscale , 2005 , 0908-OO05-22
Copyright
Copyright © Materials Research Society 2006

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