Umladungsmessungen an Lithium-Ionen im Energiebereich von 3 bis 10 keV
An ion source is described where a beam of lithium ions is directly emitted from a platinum filament coated with the lithium mineralΒ-eucryptite. Charge exchange cross sections were measured in the energy range from 3 to 10 keV for the gases A, N2, N2O, H2, O2, CH4, CCl2F2 and air. The results in this energy range agree with the adiabatic hypothesis of Massey.The uncharged particles were detected by means of a secondary electron emission detector. The secondary electron emission yield for a Cu-Be and a Ag-Mg surface by bombardment with lithium ions was measured.