THE EXCITED PARTICLES EMISSION UNDER ELECTRON-BOMBARDMENT OF THE METAL-SURFACES COVERED BY THE ALKALINE FILMS

In this paper the electron-stimulated desorption for the excited H-ato ms and molecules of OH, CO and CN has been investigated. The Cu, Ta, W and stainless steel targets were bombarded by the electron beam with the energy of 1 keV and the optical radiation emitted by the desorbed excited particles was measured. It was shown that the radiation of H(a lpha), H(beta), H(gamma)-lines of Balmer series under the electron bom bardment of neither clean metal surfaces nor the targets covered by th e adsorbed atoms of residual gas has been observed. The radiation of H (alpha). H(beta), H(gamma)-lines and molecular band of OH (306 nm) we have observed only under the electron bombardment of the metal surface s covered by Cs. The H(alpha)-line and OH-band were arisen simultaneou sly when the certain Cs-coverage was reached. In this case their inten sities depended on the H partial pressure. Under these conditions for the first time the radiation of CN and CO-molecules were observed when the organic compounds containing the nitrogen and air were admitted t o chamber.