State-selective single-electron capture in low-energy collisions of Ar{sup q+} ions with Ar (q = 6-8)

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281561

Kamber, E Y; Yaltkaya, S; Ferguson, S M ^[1]

---

1. Western Michigan Univ., Kalamazoo, MI (United States)

Single-electron capture has been studied for collisions of Ar{sup q+} with Ar using translational energy-gain spectroscopy technique at collision energies of 50 qeV (q = 6-8, where q is the projectile charge state) and scattering angles between 0{degrees} and 3{degrees}. The translational energy-gain spectra show that only a few final states were selectively populated depending on the charge state of the projectile. For Ar{sup 6+} - Ar, Ar{sup 7+} - Ar, and Ar{sup 8+} - Ar collisions the dominant reaction channels are due respectively to capture into excited states 5s, 5d and 5s5d of Ar{sub q-1}. The differential cross sections for these collisions will be discussed on the basis of a semi-classical curve-crossing model employing Coulomb potential energy curves. Additional measurements of double-differential cross sections compared with available measurements and reaction windows based on the Multichannel Landau-Zener model will also be presented.

• OSTI ID: 281561
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON
ARGON IONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON CAPTURE
ELECTRON-ATOM COLLISIONS