Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....52...43g&link_type=abstract
Astronomy and Astrophysics, vol. 52, no. 1, Oct. 1976, p. 43-47.
Astronomy and Astrophysics
Astrophysics
6
Carbon 12, Plasma Spectra, Transition Probabilities, Ultraviolet Spectra, Argon Plasma, Astronomical Spectroscopy, Line Spectra
Scientific paper
The paper describes the determination of absolute transition probabilities for 12 C I multiplets, one C II multiplet, and one O I multiplet in the wavelength range from 2550 to 5100 A, using pure CO2 or CO2+Ar plasmas produced at atmospheric pressure in a wall-stabilized cascade arc. The plasma-diagnostic procedures are discussed, and the transition probabilities are calculated on the basis of measured emission coefficients. The results show good agreement with the values proposed by Wiese (1966); the greatest deviation is found for the C I intercombination lines at 2964 and 2967 A. Errors in the determination of plasma and spectral-line parameters are assessed.
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