| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1682079 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2010 | 4 Pages |
Abstract
The behaviour of helium in polycrystalline 3He implanted tungsten at low energy (60 keV) and low fluence (2 × 1013 cm−2) has been studied as a function of post-implantation annealing temperature until 1873 K by means of Nuclear Reaction Analysis. Helium desorption has been observed only from ∼1500 K, suggesting a helium trapping at mono-vacancies. Only ∼75% of the implanted helium has been released after the annealing during 1 h at high temperature (1873 K); besides, the desorption rate decreased from 1673 K. The presence of a second type of helium trapping site is likely to explain this strong helium retention.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
A. Debelle, P.-E. Lhuillier, M.-F. Barthe, T. Sauvage, P. Desgardin,