2024.8.4

Tanaka-san’s paper published in JAP.

Tanaka-san’s paper has been published in Journal of Applied Physics.
Hydrogen negative ions are widely used for neutral beam injection heating for magnetic confinement fusion reactors, semiconductor manufacturing, and as injection beams for proton accelerators. To improve the efficiency of negative ion production and ensure more sustainable usage, a novel material called electride, which has a low work function, has recently attracted attention.
In this paper, we systematically investigated the interaction of hydrogen atom and molecule ion beams with electride surface, under low energy (below 1 keV) and grazing incidence (below 10 degrees). We found that the proportion of negative ions in the reflected hydrogen ions increases at lower angle and energy showing possible practicability of electride materials for negative ion sources.
For more details, please visit the publication on AIP’s website.