Optical, mass, and Auger spectra from e-bombarded KBr

The authors have measured the mass spectrum and optical emission lines of neutral potassium atoms ejected from KBr at T = 300 degrees K and 443 degrees K bombarded by 2-keV electrons. The room-temperature data may be complicated by the non-stoichiometry of the alkali-enriched sample surface and seem difficult to interpret. The high-temperature sample, which maintains the proper stoichiometry, produces data in support of gas-phase excitation of alkali atoms desorbed from the surface. 15 refs., 4 figs