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.
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