Charge exchange of multiply charged fluorine and lithium ions with Ne atoms
| Autor: | E. N. Ragozin, E. A. Vishnyakov, Mikhail Luginin, I. L. Beigman, I. Yu. Tolstikhina |
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| Rok vydání: | 2010 |
| Předmět: |
Physics
Range (particle radiation) Hartree–Fock method chemistry.chemical_element Statistical and Nonlinear Physics Electron Atomic and Molecular Physics and Optics Spectral line Charged particle Electronic Optical and Magnetic Materials Ion chemistry Excited state Lithium Electrical and Electronic Engineering Atomic physics |
| Zdroj: | Quantum Electronics. 40:545-550 |
| ISSN: | 1468-4799 1063-7818 |
| Popis: | The charge exchange of multiply charged fluorine and lithium ions with Ne atoms in a gas jet was recorded from the line spectra in the 125 — 350 A range, which arise from the radiative decay of the excited states of Li II — III and F III — VIII ions populated in the charge exchange. In the F III — VI ion spectra obtained from the plasma — gas interaction region we observed transitions from levels with an open (partly filled or completely open) 2s-shell, which may be populated in sequential events of single-electron charge exchange as well as in double- and many-electron charge exchange. Partial cross sections were calculated for the single-electron charge exchange of F VIII ions with Ne atoms. By way of Hartree — Fock energy level calculations it was possible to reveal resonances between the ground states of k-fold (k = 1 — 4) ionised donor atoms and the states of k-fold excited multiply charged fluorine ion resulting from the k-fold charge exchange of F VIII ions. These resonances may be responsible for the relatively large cross sections of double- and many-electron charge exchange |
| Databáze: | OpenAIRE |
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