Author/Authors :
Guseva، نويسنده , , M.I. and Gureev، نويسنده , , V.M. and Danelyan، نويسنده , , L.S and Kolbasov، نويسنده , , B.N and Korshunov، نويسنده , , S.N and Skorlupkin، نويسنده , , I.D and Stolyarova، نويسنده , , V.G and Vasilʹev، نويسنده , , V.I and Strunnikov، نويسنده , , V.M and Zatyokin، نويسنده , , V.V and Kulikauskas، نويسنده , , V.S، نويسنده ,
Abstract :
Formation of films on ITER first wall and divertor surfaces as a result of simultaneous interaction of H-isotopes with Be and C atoms was investigated in experiments simulating normal ITER operation and plasma disruptions. Under normal conditions, one can observe a continuous formation, growth and flaking of mixed Be + C films. Their Be/C atomic ratio varies from 1/2 to 2 (Be2C). At high doses of deuteron irradiation (1024 m−2) ratio D/(Be + C) ≈ 0.02–0.06. Under plasma disruption simulation, the D-concentration in mixed Be + C films is an order on magnitude smaller than under exposure to a stationary D-plasma.
