Deuterium thermal desorption from carbon based materials: A comparison of plasma exposure, ion implantation, gas loading, and C–D codeposition

Abstract Thermal desorption spectra from fine grain graphite and carbon fiber composite exposed in different plasma installations have been compared with those obtained after ion implantation, absorption from gas, and those from soft and hard C–D films. Features of the spectra were analysed and led to the conclusion that ion implantation, absorption from gas, and amorphous C:D layer formed on the surface contribute to trapping during plasma irradiation.