Oscillatory Patterns in Angular Differential Ion-atom Charge Exchange Cross Sections: The Role of Electron Saddle Swaps

Abstract

In this work, we have performed an experimental/theoretical study of state selective charge exchange cross sections in 1-10 keV/amu Ne8++Na(3s) collisions. Theoretical calculations provided by the classical trajectory Monte Carlo method (CTMC) are contrasted to data obtained at KVI by means of the magneto-optical trap recoil-ion momentum spectroscopy technique (MOTRIMS). We find that for electron capture to n-10, a two-step mechanism which involves an initial electronic excitation followed by electron capture at a later stage of the collision applies. Oscillatory structures in the n-state selective capture cross sections and recoil ion transverse momentum distributions are present in the experimental data as well as in the theoretical results, and are ascribed to the number of swaps the electron undergoes across the potential energy saddle during the collision process. © 2013 AIP Publishing LLC.

Department(s)

Physics

Keywords and Phrases

Charge exchange; Ion-atom collisions

International Standard Book Number (ISBN)

978-073541148-7

International Standard Serial Number (ISSN)

1551-7616; 0094-243X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Institute of Physics, All rights reserved.

Publication Date

20 May 2013

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