Session RP1 - Poster Session VIII.
POSTER session, Thursday afternoon, October 30
Fran Hill Southeast Exhibit Hall, ACC
A beryllium-seeded deuterium plasma is used to conduct experiments in PISCES-B to investigate mixed-material erosion and redeposition properties of materials relevant for next step burning plasma devices. The experiments are designed to reduce uncertainties in the prediction of tritium retention in redeposited mixed-materials. A small (0.15plasma onto a carbon target is seen to have a dramatic impact on the carbon chemical and physical erosion rates. The surfaces resulting from the bombardment of graphite with D+Be plasma are measured to contain a large fraction of beryllium coverage on the surface, a result that can be explained by redeposition of eroded material. The implications of these experiments for ITER will be discussed.
Work performed as part of a USDOE-EFDA Bilateral Collaboration and supported under DOE contract DE-FG03-95ER-54301.