Production of O III through Auger effect

Details Production of O III through Auger effect Production of O III through Auger effect

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....61..711b&link_type=abstract

Astronomy and Astrophysics, vol. 61, no. 5, Dec. 1977, p. 711-714. Research supported by the Conselho Nacional de Pesquisas of

Astronomy and Astrophysics

Astrophysics

Auger Effect, Autoionization, Perturbation Theory, Stars, Hot Stars, Oxygen Atoms, Stellar Spectra

Scientific paper

The first-order perturbation theory of the double-ionization process is used to study the production of O III from O I via the Auger effect. Attention is restricted to relative rates for O III production, and it is assumed that ionization or double excitation has given rise to the 1s 2s(2) 2p(4) configuration terms of O II, which may either radiate spontaneously or autoionize. Calculations are performed to obtain all the autoionization probabilities among the terms of the indicated configuration of O II and those of three final configurations of O III; the radiative transition probabilities among excited configurations of O III and the ground configuration of O II are then computed. Numerical results are presented in terms of energies for the different configurations and terms, autoionization and radiative transition probabilities, as well as the population of terms in the ground configuration of O III contributed by cascades. It is noted that the radiative transition probabilities and the population results are correct to within 20%, while the accuracy of the autoionization probabilities is of the order of a factor of 2.

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