Charge exchange of multiply charged fluorine and lithium ions with Ne atoms

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 - V...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2010-08, Vol.40 (6), p.545-550, Article 545
Main Authors: Beigman, I L, Vishnyakov, E A, Luginin, M S, Ragozin, Evgenii N, Tolstikhina, I Yu
Format: Article
Language:English
Subjects:
APPROXIMATIONS
ATOMIC AND MOLECULAR PHYSICS
ATOMS
CALCULATION METHODS
CHARGE EXCHANGE
CHARGED PARTICLES
CROSS SECTIONS
DECAY
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FERMIONS
FLUIDS
FLUORINE IONS
GASES
GROUND STATES
HARTREE-FOCK METHOD
IONS
JETS
LEPTONS
LITHIUM IONS
NEON
NONMETALS
PARTICLE DECAY
PLASMA
RADIATIVE DECAY
RARE GASES
RESONANCE
SPECTRA
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Summary: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 (laser applications and other topics in quantum electronics)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2010v040n06ABEH014313