Mass and energy analysis of positive ions emitted from metallic targets bombarded by heavy ions in the keV energy region

Mass spectra of positive ions emitted from polycrystalline metallic targets (Al, Mn, Co, Ta) were analyzed by the mass spectrometric method when the targets were bombarded by the analyzed Ar+ ion beam of 40-keV energy. Single- and multiple-charged atomic components, as well as single-charged molecular components, were detected. The energy distribution curves for some mass-spectra components, measured by the retarding potential method, are presented.