Merging beams study of theH2plus;lpar;H2,Hrpar;H3plus;,thinsp;H2plus;lpar;D2,Hrpar;HD2plus;, andD2plus;lpar;H2,Hrpar;HD2plus;reaction mechanisms

摘要

A merging beams apparatus was used to measure energy distributions of ions formed in theH2plus;lpar;H2,Hrpar;H3plus;reaction for collisions with relative energyWin the range 0.1 eVle;Wle;10.0 eV. The major components of the reaction, proton and hydrogen atom transfer, were resolved through study of theH2plus;lpar;D2,Hrpar;HD2plus;andD2plus;lpar;H2,Hrpar;HD2plus;reactions, respectively. Each component follows predominantly direct interactions at all energies studied and contributes nearly equally to theH2plus;lpar;H2,Hrpar;H3plus;reaction forWle;6 eV. At higher energies, hydrogen atom transfer becomes increasingly more important; the final relative energyWprime; agrees qualitatively with the abandoned atom model. The growth of a satellite peak forW 7 eV indicates the appearance of an electronically excited product.