APS » PROLA » Phys. Rev. A » Volume 57 » Issue 6

Phys. Rev. A 57, 4373 - 4378 (1998)

Cold-target recoil-ion-momentum spectroscopy study of single electron capture from He by slow Ar8+ ions
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M. A. Abdallah, W. Wolff *, H. E. Wolf *, E. Sidky, E. Y. Kamber †, M. Stöckli, C. D. Lin, and C. L. Cocke
J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506

Received 6 January 1998

Cold-target recoil-ion-momentum spectroscopy (COLTRIMS) has been used to study single electron capture from He by Ar8+ ions at projectile velocities between 0.2 and 1.0 a.u. Populations of 3d through 7l states on the final ion are resolved, and angular distributions are presented for separated major final channels. As the projectile velocity is raised, the reaction window is observed to spread. Contrary to expectations based on a Landau-Zener picture of the process, higher n and l become favored with higher v. The results are in excellent agreement with coupled-channel calculations.


©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v57/p4373
DOI: 10.1103/PhysRevA.57.4373
PACS: 34.70.+e, 34.50.Fa

* Present address: Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68.528, 21945-970 Rio de Janeiro, Brazil.
† Present address: Western Michigan University, Kalamazoo, MI 49008.

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