Single ionization and electron capture in He2++Na collisions

S. Knoop, R.E. Olson, E. Ott, V.G. Hasan, R.W.H. Morgenstern, R.A. Hoekstra

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

Single-electron capture and ionization in He2+ + Na collisions at energies around the matching velocity (2-13 keV amu(-1)) have been studied both experimentally and theoretically. State-selective cross section for capture into the n = 2, 3, 4 and n >= 5, and the ionization cross section as well as differential cross sections for capture into n = 3 and 4 were obtained by the MOTRIMS method and compared with CTMC calculations. Good agreement was found between experiment and CTMC, especially concerning capture into high n-shells (n = 4, n >= 5) and the ionization cross sections. For capture into the subdominant n = 2 shell close coupling calculations show better agreement. The differential cross sections for capture into n = 3 and 4 show a different energy dependency.

Original languageEnglish
Pages (from-to)1987-1998
Number of pages12
JournalJournal of Physics B-Atomic Molecular and Optical Physics
Volume38
Issue number12
DOIs
Publication statusPublished - 28-Jun-2005

Keywords

  • HIGHLY-CHARGED IONS
  • X-RAY-EMISSION
  • RECOIL-ION
  • MOMENTUM SPECTROSCOPY
  • CROSS-SECTIONS
  • ULTRAVIOLET EMISSION
  • ALPHA-PARTICLE
  • ALKALI ATOMS
  • EXCITATION
  • MAGNESIUM

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