VACUUM-ULTRAVIOLET EMISSIONS FROM THE IONIC EXCIMER MOLECULES (KRCS)(-ENERGY ELECTRON-BEAM EXCITATION() AND (HEAR)(+) BY LOW)

Vacuum ultraviolet fluorescence emissions from the ionic excimer molec ules (KrCs)(+) and (HeAr)(+) were studied in detail by low-energy elec tron-beam excitation. Measurements were performed as a function of gas composition, gas pressure, and deposited energy in order to investiga te the kinetic mechanisms of these molecules. The rate constants of th e formation and competitive reactions were determined from the observe d fluorescence signal decay. Estimations of the total fluorescence yie ld and of the gain coefficient for these molecules are given.