Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pobeo..89...84m&link_type=abstract
Publications of the Astronomical Observatory of Belgrade, vol. 89, pp. 84-84
Astronomy and Astrophysics
Astronomy
Scientific paper
Processes of formation and decay of the Rydberg states of multiply charged ions escaping solid surfaces with intermediate velocities ( v Ë1 a.u.) are complex quantum events that require a detailed quantum description. We developed a two-state vector model of electron captures into lower-n, but high-l Rydberg states. The electron exchange process is described by a mixed flux through a moving plane, positioned between the solid surface and the ionic projectile. Generally, the lower-n model reproduced the experimentally observed non-linear trend of the l distributions from l = 0 to lmax = n - 1. In the case of large values of the angular momentum quantum numbers l , the model takes into account an importance of a wide space region around the projectile trajectory. The reionization of the previously populated states is also taken account and can be described as a decay process of the electron wave function. The coresponding ionization rates are obtained by an appropriate etalon equation method: in the large- l case the radial electronic coordinate ? is treated as variational parameter. The theoretical predictions based on that population-reionization mechanism fit the available beam-foil experimental data concerning the SVI, ClVII and ArVIII ions, as well as the experimental data obtained in the interaction of multiply charged ions with micro-capillary foil.
Bozanic D. K.
Mirkovic M. A.
Nedeljkovic N. N.
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