Angular resolved energy distributions of low energy light ions reflected from a polycrystalline Mo surface

Particle reflections of low energy light ions from a vanadium alloy (V–4Cr–4Ti)

“…1 shows examples of the energy and angular resolved intensity contour map of H + and H À ions at the incident angle of 20°at room temperature, reflected from (a) Mo, (b) carbon on Mo, (c) W and (d) Vanadium alloy targets, respectively. We observe similar trends for all targets [5,6]. We always observe the positive and negative ion reflections for both cases of the positive and negative hydrogen ion injections.…”

“…In the H + beam injection the intensities of the reflected positive ions are usually higher than those of the negative ions in this energy range. The normalized intensities of the reflected ions for the vanadium target are the same order as those for W and Mo [5,6]. The energy spectra of the reflected ions from the vanadium target depend upon the reflection angle b more strongly than other targets.…”

“…This sample shows interesting behavior compared to the plasma-facing material candidates of W, Mo and C [5,6]. The vanadium alloy surface shows a characteristic reflection angle dependence of the reflected ion energy with the time-dependent change at a constant temperature.…”

“…The detail of the experimental system has already been reported elsewhere [5,6]. Several improvements have been made to study hydrogen-absorbing characteristic of vanadium alloys.…”

“…The system has successfully produced ion spectra reflected from Mo, carbon coated Mo, and W targets [3][4][5][6]. In this paper we report the first results of the study on particle reflections from the NIFSHEATs vanadium alloy bombarded by low energy (1-2 keV) hydrogen ions.…”