Dissociative excitation of selenium atoms in collisions of electrons with Se2 molecules

Abstract

The dissociative excitation of selenium atom by electron impact is investigated for the first time under conditions of narrow composition of molecular beam. The thermal destruction of heavy Se n molecules is used to obtain a beam with prevailing Se 2 molecule. Seventeen cross sections of dissociative excitation of SeI are measured at electron energy of 50 eV. Possible reactions of formation of excited selenium atoms in e-Se 2 collisions are discussed.