Author/Authors :
Yamaoka، نويسنده , , H. and Tanaka، نويسنده , , N. and Matsumoto، نويسنده , , Y. and Nishiura، نويسنده , , M. and Tsumori، نويسنده , , K. and Takeuchi، نويسنده , , S. and Sugawara، نويسنده , , H. and Shinto، نويسنده , , K. and Okamoto، نويسنده , , A. and Sasao، نويسنده , , M. and Wada، نويسنده , , M.، نويسنده ,
Abstract :
The angular distributions and energy spectra of positive and negative ions reflected from a vanadium alloy (V–4Cr–4Ti) bombarded by beams of low energy (1–2 keV) ions of H, He, and O were measured. The intensities of H+ or H− produced from reflection of 2 keV H+ beam at the surface of vanadium alloy showed the maxima at the angles closer to the surface normal from the mirror reflection angle, compared with Mo and W samples. The time dependence of the angular distributions of the reflected H+ or H− ions measured at the sample temperature of about 240–260 °C showed a shift of the peak in the angular distribution to the mirror reflection angle.
Keywords :
First wall , Ion–surface interactions , vanadium , Edge plasma , Hydrogen inventory
