Electron capture by metastable projectiles on He and Ne

J. Newcomb, Thomas R Dillingham, James Hall, S. L. Varghese, Philip L. Pepmiller, Patrick Richard

Research output: Contribution to journalArticle

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Abstract

Electron capture to n2 levels of F7+ (1s 2s)S3 projectiles lead to three-electron ions with an energetically allowed K-Auger decay channel. We have measured the F K-Auger emission spectra for collisions with thin gas targets of He and Ne with sufficiently high resolution to distinguish capture to several of the low-lying n values. The K-Auger production cross sections are reported as a function of the n level into which the electron is captured. The n-level dependence is measured for projectile energies of 6, 9, 12, and 15 MeV and is compared to the Oppenheimer-Brinkman-Kramers OBK model for charge transfer and to a 1n3 function. The measured K-Auger electron-production cross sections closely follow the 1n3 function which differs from the predicted OBK n dependence, even though the cross sections for the higher n levels agree with the predicted OBK energy dependence. The effects of cascading upon the calculated n dependence are also studied.

Original languageEnglish (US)
Pages (from-to)82-91
Number of pages10
JournalPhysical Review A
Volume29
Issue number1
DOIs
StatePublished - 1984
Externally publishedYes

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electron capture
projectiles
cross sections
electrons
emission spectra
charge transfer
collisions
energy
high resolution
decay
gases
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Newcomb, J., Dillingham, T. R., Hall, J., Varghese, S. L., Pepmiller, P. L., & Richard, P. (1984). Electron capture by metastable projectiles on He and Ne. Physical Review A, 29(1), 82-91. https://doi.org/10.1103/PhysRevA.29.82

Electron capture by metastable projectiles on He and Ne. / Newcomb, J.; Dillingham, Thomas R; Hall, James; Varghese, S. L.; Pepmiller, Philip L.; Richard, Patrick.

In: Physical Review A, Vol. 29, No. 1, 1984, p. 82-91.

Research output: Contribution to journalArticle

Newcomb, J, Dillingham, TR, Hall, J, Varghese, SL, Pepmiller, PL & Richard, P 1984, 'Electron capture by metastable projectiles on He and Ne', Physical Review A, vol. 29, no. 1, pp. 82-91. https://doi.org/10.1103/PhysRevA.29.82
Newcomb, J. ; Dillingham, Thomas R ; Hall, James ; Varghese, S. L. ; Pepmiller, Philip L. ; Richard, Patrick. / Electron capture by metastable projectiles on He and Ne. In: Physical Review A. 1984 ; Vol. 29, No. 1. pp. 82-91.
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