DIFFERENTIAL CROSS-SECTIONS FOR STATE-SELECTIVE ELECTRON-CAPTURE BY LOW-ENERGY AR(Q+) IONS FROM HE AND AR

YALTKAYA S., KAMBER E., FERGUSON S.

PHYSICAL REVIEW A, vol.48, no.1, pp.382-391, 1993 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 1
  • Publication Date: 1993
  • Doi Number: 10.1103/physreva.48.382
  • Journal Name: PHYSICAL REVIEW A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Compendex, INSPEC, zbMATH, DIALNET
  • Page Numbers: pp.382-391
  • Akdeniz University Affiliated: Yes

Abstract

Doubly differential cross sections, in angle and energy, for state-selective single-electron capture from He and Ar by Ar(q+) ions have been studied experimentally at laboratory impact energies between 25q and 100q eV (q=4 and 5, where q is the ion charge state) and scattering angles between 0-degrees and 5-degrees, by means of translational energy-gain spectroscopy. The translational energy-gain spectra show that only a few final states were selectively populated depending on the charge state of the projectile, ionization potential of the target, and weakly on the impact energy. A resonable description of the populated final states is described qualitatively in terms of the reaction windows, which are calculated using a multichannel Landau-Zener model. The general features of the differential cross sections are discussed in terms of a semiclassical curve-crossing model.