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Recombination of H3+ Ions in the Afterglow of a He-Ar-H2 Plasma

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arxiv 0710.2339 v1 pith:H3666752 submitted 2007-10-11 physics.atom-ph physics.plasm-ph

J. Glosik , I. Korolov , R. Plasil , O. Novotny , T. Kotrik , P. Hlavenka , J. Varju , Chris H. Greene
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V. Kokoouline I. A. Mikhailov
This is my paper · ORCID
classification physics.atom-phphysics.plasm-ph
keywords plasmarecombinationratethree-bodyafterglowagreementbodycalculations
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Recombination of H3+ with electrons was studied in a low temperature plasma in helium. The plasma recombination rate is driven by two body, H3+ + e, and three-body, H3+ + e + He, processes with the rate coefficients 7.5x10^{-8}cm3/s and 2.8x10^{-25}cm6/s correspondingly at 260K. The two-body rate coefficient is in excellent agreement with results from storage ring experiments and theoretical calculations. We suggest that the three-body recombination involves formation of highly excited Rydberg neutral H3 followed by an l- or m- changing collision with He. Plasma electron spectroscopy indicates the presence of H3.

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