Formation of (Xe₂H)* centers in solid Xe via recombination: Nonstationary luminescence and « internal electron emission »

The formation of excimers (Xe₂H)* in solid Xe doped with molecular hydrogen under electron beam is studied using the original two-stage technique of nonstationary (NS) cathodoluminescence (CL) in combination with the current activation spectroscopy method - thermally stimulated exoelectron emission (TSEE). Charged species were generated using a high-density electron beam. The species produced were then probed with a lowdensity beam on gradual sample heating. The near UV emission of the (Xe₂H)* was used to monitor the neutralization process. It is found that the temperature behavior of the NS CL band of (Xe₂H)* clearly correlates with the yield of TSEE measured after identical pre-irradiation of the sample. The fingerprints of the thermally stimulated detrapping of electrons - «internal electron emission» in the spectrum of NS CL point to the essential role of neutralization reaction in the stability of the proton solvated by rare-gas atoms. PACS: 78.60.Hk Cathodoluminescence, ionoluminescence; 78.60.-b Radiative recombination; 79.75.+g Exoelectron emission.