Charge exchange from D(n=2) atoms to low-Z receiver ions

R Hoekstra*, H Anderson, FW Bliek, M von Hellermann, CF Maggi, RE Olson, HP Summers

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

To elucidate the influence on charge-exchange Spectroscopy of metastable deuterium donors, the corresponding cross sections for state-selective charge transfer have been calculated using the classical trajectory Monte Carlo method. The cross sections for electron capture from D(n = 2) by fully stripped low-Z ions are contrasted with those for capture from ground state D to indicate the importance of metastable donors. Using the new data, effective emission coefficients for the spectral lines of H-like light impurities used in charge-exchange spectroscopy have been calculated. These results incorporate the presence of excited n = 2 donors in the beam and apply to a wide range of neutral deuterium beam energies. For beam energies below approximately 25 keV amu(-1) a small fraction of D(n = 2) in the beam becomes of importance and at lower energies it even starts to dominate the charge-exchange spectroscopy observations.

Original languageEnglish
Pages (from-to)1541-1550
Number of pages10
JournalPlasma Physics and Controlled Fusion
Volume40
Issue number8
DOIs
Publication statusPublished - Aug-1998

Keywords

  • ELECTRON-CAPTURE COLLISIONS
  • POLARIZED-LIGHT EMISSION
  • CROSS-SECTIONS
  • ENERGY COLLISIONS
  • HYDROGEN-ATOMS
  • SPECTROSCOPY
  • EXCITATION
  • IONIZATION
  • STATE

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