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Hydrogen isotope retention in B{sub 4}C coating on RGT graphite under high heat fluxes of DIII-D divertor plasma

Wampler, William R.

The results of the investigation of retention and thermal desorption of hydrogen isotopes of B{sub 4}C coated RGT (a recrystallized graphite with high thermal conductivity, 600 W/mK) after the exposure to high heat flux in the divertor strike point region of DIII-D using the DiMES sample exchange system are reported. It is shown that the material is very promising for plasma facing elements of tokamaks.