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The short-range reaction matrix in MQDT treatment of dissociative recombination and related processes

  • V. Ngassam
  • A. Florescu
  • L. Pichl
  • I. F. Schneider
  • O. Motapon
  • A. Suzor-Weiner
OriginalPaper

Abstract.

We discuss the Lippmann-Schwinger equation which governs the short-range reaction matrix (K-matrix) in the two-step multichannel quantum defect theory (MQDT) of dissociative recombination and related processes. We show that, if the energy dependence of the electronic coupling between the dissociative state and the ionization continua can be neglected, the convergence of the Born expansion of the Lippmann-Schwinger equation is achieved at second order. For the case of energy-dependent interaction, higher order effects are tested using a non-perturbative method for solving the Lippmann-Schwinger equation. Numerical examples are given for the dissociative recombination and vibrational de-excitation of the H2 + molecular ion.

Keywords

Recombination Energy Dependence Order Effect Related Process Electronic Coupling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • V. Ngassam
    • 1
    • 2
  • A. Florescu
    • 1
    • 3
  • L. Pichl
    • 4
  • I. F. Schneider
    • 5
  • O. Motapon
    • 2
  • A. Suzor-Weiner
    • 1
    • 6
  1. 1.Laboratoire de Photophysique MoléculaireUniversité Paris-SudOrsayFrance
  2. 2.Centre de Physique Atomique Moléculaire et Optique Quantique (CEPAMOQ)Université de DoualaDoualaCameroun
  3. 3.Institute for Space ScienceBucharestRomania
  4. 4.Foundation of Computer Science LaboratoryUniversity of AizuAizuwakamatsuJapan
  5. 5.Laboratoire de Mécanique, Physique et GéosciencesUniversité du HavreLe HavreFrance
  6. 6.Laboratoire de Chimie PhysiqueUniversité Paris VIParisFrance

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