Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236..261d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 1, Sept. 1990, p. 261-267. Sponsorship: Research supporeted by RZN of
Astronomy and Astrophysics
Astrophysics
8
Neutral Atoms, Spectral Line Width, Spectrum Analysis, Fine Structure, Van Der Waals Forces
Scientific paper
Regularities and similarities in the widths of spectral lines perturbed by neutral atoms have been studied in order to find out if they are apparent to such a degree that they can be used to obtain data by interpolation and hence provide a tool for the critical evaluation of new experimental results. Consideration of the structure of the emitting (or absorbing atom) indicates that similarities should exist for lines within a multiplet or supermultiplet. Line widths should also have a regular behavior along a spectral series, for corresponding transitions in homologous emitters, and for isoelectronic sequences. The dependence of line widths on perturber properties such as polarizability has also been examined. Critically selected experiments on the nonresonant broadening of spectral lines have been examined and exceptions from expected regularities are discussed.
Dimitrijevic Milan S.
Peach Gillian
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