Resonant charge transfer in the interaction of hyperthermal anions with a technical graphite-like conducting surface

Abstract

It was found that when the hyperthermal anions Br-, S- and SH- interact with the cleaned surface of soot, the intensity of the ion yield curves (IYC) of fragmentary anions S- and SH- decreases, while Br- does not. Based on the DFT calculations and the use of the induced charge model, it was shown that HOMO of the S- and SH- anions is located in the energy range of the conduction band of graphite, which allows an additional electron to tunnel from these anions to the surface and this leads to their neutralization.