Simulation of hydrogen bubble growth in tungsten by a hybrid model
Release Time:2019-03-11 Hits:
Indexed by: Journal Article
Date of Publication: 2015-08-01
Journal: 21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI)
Included Journals: Scopus、CPCI-S、EI、SCIE
Volume: 463
Page Number: 367-371
ISSN: 0022-3115
Abstract: A two dimensional hybrid code (HIIPC-MC) joining rate-theory and Monte Carlo (MC) methods is developed in this work. We evaluate the cascade-coalescence mechanism contribution to the bubble growth by MC. First, effects of the starting radius and solute deuterium concentration on the bubble growth are studied; then the impacts of the wall temperature and implantation ion flux on the bubble growth are assessed. The simulation indicates that the migration-coalescence of the bubbles and the high pressure inside the bubbles are the main driving forces for the bubble growth, and that neglect of the migration and coalescence would lead to an underestimation of the bubble growth or blistering. (C) 2014 Elsevier B.V. All rights reserved.