Deuterium retention in beryllium exposed to a 60kV deuterium beam - consequences for next step devices

摘要

The trapping of tritium is an important parameter for the selection of a suitable first wall material. In the JET Neutral Beam Test Bed we can study actively cooled first wall samples with a power flux relevant for a fusion plant. The particle energy of 20-60 keV is considerably higher than the ion energy expected in a divertor (but comparable to charge exchange particles) and the particle flux is consequently lower.