The collisional atomic processes of Rydberg alkali atoms in Geo-cosmical plasmas

Abstract

The chemi-ionization (CI) processes in atom-Rydberg-atom collisions are investigated in this contribution. The rate coefficients for CI processes in ${\text{Li}}^{\ast }(n)+\text{Na}$, ${\text{Li}}^{\ast }(n)+\text{Li}$, ${\text{Na}}^{\ast }(n)+\text{Na}$ and ${\text{H}}^{\ast }(n)+\text{Li}$ collisions are calculated for wide region of temperatures $T\le 4000$ K and the principal quantum numbers $4\le n\le 25$. These processes are investigated, with a particular accent on the possibility of involving alkali metals as the factors which may influence optical properties and modeling of weakly ionized layers of different stellar atmospheres. The obtained rate coefficients are applied to models of the Io atmosphere. Moreover, we present here further development of investigation of CI processes for other possible applications in spectroscopy such as in low temperature laboratory plasma created in gas discharges, for example in microwave-induced discharges at atmospheric pressure, where such plasma conditions may be favorable.

arXiv commentAccepted for publishing in Monthly Notices of the Royal Astronomical Society, 8 pages, 3 figures

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