Astronomy and Astrophysics – Astronomy
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.3204f&link_type=abstract
American Astronomical Society Meeting 206, #32.04; Bulletin of the American Astronomical Society, Vol. 37, p.481
Astronomy and Astrophysics
Astronomy
Scientific paper
Oscillator strengths for transitions in Cl II and III are derived from lifetimes and branching fractions measured with beam-foil techniques. The focus is on the multiplets at 1071 Å in Cl II and 1011 Å in Cl III whose lines are seen in spectra of diffuse interstellar clouds and the Io torus acquired with the Far Ultraviolet Spectroscopic Explorer. These data represent the first complete set of experimental f-values for the lines in the multiplets. Our results for Cl II λ 1071 agree very well with the most recent theoretical effort and with Morton's newest recommendations. For Cl III, however, our f-values are significantly larger than those given by Morton; instead, they are more consistent with recent large-scale theoretical calculations. Extensive tests provide confirmation that LS coupling rules apply to the transitions for these multiplets.
This work was supported by NASA grant NAG5-11440 to the University of Toledo.
Brown Malcolm
Cheng Samuel
Federman Steven Robert
Fritts Matthew Christopher
Gibson N. D.
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