PROPERTIES OF HYDROGEN ISOTOPES IN THE TOKAMAK PLASMA-FACING MATERIALBERYLLIUM

Authors
KRIMMEL H FAHNLE M
Citation
H. Krimmel et M. Fahnle, PROPERTIES OF HYDROGEN ISOTOPES IN THE TOKAMAK PLASMA-FACING MATERIALBERYLLIUM, Journal of nuclear materials, 231(1-2), 1996, pp. 159-161
Citations number
17
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
231
Issue
1-2
Year of publication
1996
Pages
159 - 161
Database
ISI
SICI code
0022-3115(1996)231:1-2<159:POHIIT>2.0.ZU;2-F
Abstract
By calculations within the framework of the ab initio electron theory in local-density approximation it is shown that hydrogen isotopes occu py the hexahedral or the tetrahedral interstitial sites in beryllium. The energetically most favourable position in the tetrahedron thereby is not the geometrical centre, but a site very close to the hexagonal basal plane. The calculated heat of solution for tritium on the hexahe dral site is 0.8 +/- 0.1 eV.