Thermodesorption of graphite exposed to a deuterium plasma
The total gas balance in fusion machines is largely dependent on the recycling properties of the graphite which is the main component of the inner wall. Pyrolytic and polycrystalline samples of graphite were therefore implanted with a deuterium plasma source. After exposure the samples were analysed by thermo-desorbtion with different heating rates. The results give spectra of complex structure, which peak at a lower temperature than was found in earlier experiments using energetic ion beam implant, though comparable to those found in experiments made with graphite thermally exposed to hydrogen isotopes. The experimental data are compared with values resulting from numerical simulation of detrapping and diffusion processes.
Bibliographic Reference: Paper presented: 16th European Conference on Controlled Fusion and Plasma Physics, Venezia (IT), March 13-17, 1989
Availability: Available from (1) as Paper EN 34903 ORA
Record Number: 198910898 / Last updated on: 1994-12-01
Original language: en
Available languages: en