Atom-Rydberg Atom Collisions in Hydrogen Plasmas: Cross Sections and Rate Coefficients

V. A. Srećković, M. S. Dimitrijević, Lj M. Ignjatović, N. N. Bezuglov, A. N. Klyucharev

Research output


Non-LTE modelling requires accurate atomic data e.g. collisional excitation and ionization cross-sections and rate coefficients. In order to improve the modeling of the solar photosphere, as well as to model atmospheres of other similar and cooler stars where the main constituent is also hydrogen, it is necessary to take into account the influence of all the relevant collisional processes on the excited-atom populations in weakly ionized hydrogen plasmas. In this context we present the data needed for the inclusion of the specific atomic collisional processes in the investigation of the optical and kinetic properties of weakly ionized stellar atmospheres layers. The ionization processes in collisions of excited hydrogen atoms with atoms in ground states were considered for the principal quantum numbers 2 ≤ n ≤ 20 and temperatures 4000 K ≤ T ≤ 20000 K.

Original languageEnglish
Article number012022
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 23 Aug 2019
Event24th International Conference on Spectral Line Shapes, ICSLS 2018 - Dublin
Duration: 17 Jun 201822 Jun 2018

Scopus subject areas

  • Physics and Astronomy(all)

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