He2+-He collisions: one-electron capture and target-ion excitation

H.O. Folkerts*, F.W. Bliek, L. Meng, R.E. Olson, R. Morgenstern, M. von Hellermann, H.P. Summers, R. Hoekstra

*Corresponding author for this work

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Abstract

By means of photon emission spectroscopy we have studied state selective one-electron capture and target-ion excitation in collisions of He-2+ with He. The collision energy has been varied from 1 to 75 keV amu-1 Four-body classical trajectory Monte Carlo calculations have been performed in the energy range of 50-300 keV amu-1. In the energy range where experiment and theory overlap there is in general fair agreement, although the 1-distributions within a principal quantum shell exhibit differences. At energies below 50 keV amu-1 the experiments confirm the results of atomic orbital calculations, presented in an accompanying paper by Fritsch. Combining all the experimental and theoretical data we have determined a reliable cross section data base for use in neutral helium beam based plasma diagnostics on large tokamaks.

Original languageEnglish
Pages (from-to)3475-3488
Number of pages14
JournalJournal of Physics B-Atomic Molecular and Optical Physics
Volume27
Issue number15
Publication statusPublished - 14-Aug-1994

Keywords

  • EXCHANGE RECOMBINATION SPECTROSCOPY
  • CROSS-SECTIONS
  • HELIUM
  • IONIZATION
  • HYDROGEN
  • PLASMA
  • HE-2+
  • H+

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