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Report No.

Tritium distribution of tungsten exposed with low energy, high flux D plasma

Isobe, Kanetsugu; Alimov, V.; Yamanishi, Toshihiko; Torikai, Yuji*

To understand these plasma surface interactions, tritium distribution of tungsten exposed with low energy (38 eV), high flux D plasma was examined with BIXS. D plasma exposures were carried out at around 495 and 550 K of specimen. After that, specimen was exposed with gaseous tritium diluted with deuterium at 473 K in 5 hours. Amount of tritium in surface layer was measured with BIXS and tritium distribution of surface. The amount of tritium in surface layer was different of each exposure condition and tungsten exposed at 495 K shows highest amount of tritium. This result quite agrees with D inventory examination with thermal desorption spectrometer.



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