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Thermo-oxidation of codeposits from DIII-D divertor tiles

Here, we present new findings for the oxidative erosion of codeposits on divertor tiles removed from the DIII-D tokamak (General Atomics, San Diego). We have extended the previously (Ochoukov R et al 2006 Phys. Scr. T 124 27) studied temperature and O2 pressure ranges to 673 K (400 °C) and 79 kPa (600 Torr), respectively. We have also examined the dependence of the amount of deuterium removed by oxidation on the impurity concentration in the specimen.