F formation via simultaneous two-electron capture during grazing scattering of F+ ions from a LiF(001) surface

A. G. Borisov, V. Sidis, P. Roncin, A. Momeni, H. Khemliche, A. Mertens, and H. Winter
Phys. Rev. B 67, 115403 – Published 6 March 2003
PDFExport Citation

Abstract

For slow F+ ions (v<0.05a.u.) scattered from a clean and flat LiF(001) surface under a grazing angle of incidence, large fractions of negative F ions have recently been observed in the reflected beam, while for neutral F0 projectiles no negative F ions are produced in the same velocity range [P. Roncin et al., Phys. Rev. Lett. 89, 043201 (2002)]. From detailed studies on projectile energy loss and charge fractions, the conclusion was drawn that the F ions are formed from F+ via a simultaneous capture of two electrons from adjacent F sites at the surface. We present a theoretical description of the double-electron-capture process leading to F formation from F+ projectiles grazingly scattered from the LiF(001) surface. We use quantum chemistry calculations to determine the relevant Hamiltonian matrix and close-coupling solution of the time-dependent Schrödinger equation. The theoretical results are in good agreement with experimental observations.

  • Received 31 July 2002

DOI:https://doi.org/10.1103/PhysRevB.67.115403

©2003 American Physical Society

Authors & Affiliations

A. G. Borisov, V. Sidis, P. Roncin, A. Momeni, and H. Khemliche

  • Laboratoire des Collisions Atomiques et Moléculaires, UMR CNRS-Université Paris-Sud 8625, Université Paris-Sud, 91405 Orsay Cedex, France

A. Mertens and H. Winter

  • Institut für Physik, Humboldt-Universität zu Berlin, Invalidenstrasse 110, D-10115 Berlin, Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 67, Iss. 11 — 15 March 2003

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×