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Bombardment induced re-emission of ionically pumped inert gas from a glass surface

1962; IOP Publishing; Volume: 13; Issue: 1 Linguagem: Inglês

10.1088/0508-3443/13/1/303

2057-7656

L H James, G Carter,

Ion-surface interactions and analysis

Studies have been made of the release of an inert gas, argon or krypton, ionically pumped into glass surfaces, by subsequent bombardment with the other gas, krypton or argon. It is found that ion bombardment, up to energies of 1 kev, cannot completely recover sorbed gas. This, and other evidence, leads to the conclusion that gas is released, during ion bombardment, by transfer of sufficient energy to a trapped gas atom, for its desorption, rather than simultaneous release during glass sputtering. Approximate values for gas sputtering coefficients are deduced. It is also concluded that gas is held in superficial trapping sites rather than in a depth distribution into the solid.