Atomic transition probabilities of Ce I from Fourier transform spectra
POSTER
Abstract
We report transition probabilities for 2874 lines of CeI in the wavelength range 360 -- 1500 nm. These are derived from new branching fraction measurements on Fourier transform spectra normalized with recently-reported radiative lifetimes (Den Hartog et al., J. Phys. B 42, 085006 (2009)). We have analyzed the decay branches for 153 upper levels in 14 different spectra recorded under a variety of discharge lamp conditions. Comparison of results with previous less extensive investigations shows good agreement for lines studied in common. Accurate Ce I transition probabilities are needed for applications in astrophysics and in lighting research, particularly for the development of improved metal halide high-intensity discharge lamps.
Authors
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D.E. Nitz
St. Olaf College
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J.E. Lawler
Univ. of Wisconsin, University of Wisconsin
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J. Chisholm
Boston College
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M.P. Wood
University of Wisconsin
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J. Sobeck
University of Chicago
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E.A. Den Hartog
University of Wisconsin