The rates of excitation and ionization of a carbon atom by electrons

Details The rates of excitation and ionization of a carbon atom by electrons The rates of excitation and ionization of a carbon atom by electrons

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986kfnt....2...31s&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 2, Nov.-Dec. 1986, p. 31-39. In Russian.

Physics

Atomic Excitations, Carbon, Electron Impact, Ion Production Rates, Solar Spectra, Atomic Collisions, Solar Atmosphere, Temperature Dependence

Scientific paper

The paper presents a unified simple algorithm for calculating rates of excitation and ionization by electron impact from formulas of certain approximations for a number of transitions of the neutral carbon atom C I. The algorithm is of particular interest for the non-LTE synthesis problem. It is shown that in solar atmospheric conditions, the Seaton (1963) approximation for ionization and the assumption that the impact strength is constant for excitations lead to an incorrect dependence of the carbon atom impact rates on temperature. The results are of interest in connection with the interpretation of solar and stellar spectra.

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