Abstract

Translational energies of secondary neutral atoms produced by the charge transfer reactions in collisions of argon ions Ar + and metastable argon ions Ar +M with H 2 . molecules have been measured by a time-of-flight technique at ten eV region. Two kinds of charge transfer processes were examined; reaction between ground state reactants Ar + +H 2 →Ar+H 2 + , and formation of metastable atoms Ar M from metastable ions Ar +M +H 2 →Ar M +H 2 + . The ground state Ar atoms were predominantly scattered with little or no angular deflection and with little energy exchange, resulting the H 2 + in vibrational state v '=1 for Ar + ( 2 P 3/2 ) and v '=2 for Ar + ( 2 P 1/2 ). On the other hand, the Ar M atoms were yielded with being deflected in relatively wide angle and releasing considerable amount of internal energy (≥1 eV).

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