Dissociative Recombination of H2+,HD+ and D2+ Molecular Ions

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  • Rai Dastidar K.
    Department of General Physics & X-Rays, Indian Association for the Cultivation of Science
  • Rai Dastidar T. K.
    Department of General Physics & X-Rays, Indian Association for the Cultivation of Science

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タイトル別名
  • Dissociative Recombination of H<SUB>2</SUB><SUP>+</SUP>, HD<SUP>+</SUP> and D<SUB>2</SUB><SUP>+</SUP> Molecular Ions
  • Dissociative Recombination of H2 + HD +
  • Dissociative Recombination of H<sup>+</sup><sub>2</sub>, HD<sup>+</sup>and D<sup>+</sup><sub>2</sub>Molecular Ions

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An ab initio calculation of the cross-sections of dissociative recombination (DR) in H2+, HD+ and D2+ has been made using the projection operator technique. A single-configuration molecular orbital wavefunction has been used for the molecular resonance state, although the applicability of such a simple wavefunction has not been fully tested. The decay width has been calculated in the “local” approximation. Comparison with experiment shows that for H2+ the calculated results can fully account for the total DR cross-section in the low and intermediate energy regions, and that the local approximation is sufficiently accurate to account for the undulatory structure in the energy dependence of the DR cross-section. A similar structure is also obtained for D2+, although here the agreement with experiment is less marked. For HD+ no particular heteronuclearity effect is observed.

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