Abstract
A new compact plasma simulator device has been mounted on line at the Van de Graaff accelerator and successfully used for deposition experiments of deuterium atoms with the mean ion energy of 120–140 eV. Deuterium retention in graphite exposed to a magnetron plasma at flux densities above 10 17 D cm −2 s −1 has been studied by nuclear reaction analysis. A dynamic retention of about 1 × 10 16 D/ cm 2 has been identified in the discharge with a current density exceeding 16 mA/cm 2. This dynamic inventory is released within 60 ms after the discharge has been stopped. The interpretation is based on trapping, detrapping and diffusion of deuterium in graphite.
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