Chapter

Elements of atomic spectroscopy

Vladilen Letokhov and Sveneric Johansson

in Astrophysical Lasers

Published in print December 2008 | ISBN: 9780199548279
Published online May 2009 | e-ISBN: 9780191720512 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199548279.003.0003
 Elements of atomic spectroscopy

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This chapter illustrates atomic structures of increasing complexity by using energy level diagrams of atoms or ions, for which fluorescence and natural laser radiation have been proposed. It defines the terminology used in connection with atomic structure, transitions, and various processes due to the spectroscopic language difference between atomic and stellar spectroscopy, which may constitute a barrier in scientific communication between the two fields. To address the two different systems of labelling spectral lines, a compromise is made with the use of LS notation for energy levels and transitions except for those lines which are better known as members of well-known line series, e.g., Lyα, Lyβ, Hα (Balmer α) etc. in hydrogen.

Keywords: atomic structure; energy level diagrams; atoms; ions; one-electron systems; two-electron systems; complex spectra

Chapter.  5357 words.  Illustrated.

Subjects: Atomic, Molecular, and Optical Physics

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