Excitation of C II lines by photoionization of neutral carbon

Details Excitation of C II lines by photoionization of neutral carbon Excitation of C II lines by photoionization of neutral carbon

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....82..256h&link_type=abstract

Astronomy and Astrophysics, vol. 82, no. 1-2, Feb. 1980, p. 256-259.

Astronomy and Astrophysics

Astrophysics

7

Carbon, Continuous Radiation, Ionization Cross Sections, Line Spectra, Photoionization, Wave Functions, Ground State, Hartree Approximation, Resonance, Solar Spectra, Transition Probabilities, Ultraviolet Spectra

Scientific paper

To determine how efficiently carbon photoionization in sunlight may populate excited C II levels, multiconfiguration Hartree-Fock wave functions for C(+) (Dankwort and Trefftz, 1978) were used to set up a close coupling calculation for the free and bound states of neutral carbon. Photoionization rates in sunlight at 1 AU for ionization from the C I ground state into the different C(+) states are (in units of 10 to the -9th per sec): 540 for 2s(2)2p (2)P(0), 13.5 for 2s2p(2) (4)P, 1.05 for 2s2p(2) (2)D, 0.13 for 2s2p(2) (2)S, and 1.87 for 2s2p(2) (2)P.

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