Chapter

Elements of Radiative Qantum Transition

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/9780199548279.003.0002
 Elements of Radiative Qantum Transition

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This chapter presents some basic elements of the theory of radiative quantum transitions in a two-level system, which are needed to describe the properties of astrophysical lasers as well as their distinctions from astrophysical masers and laboratory lasers. Topics discussed include spontaneous and stimulated emissions, broadening of spectral lines, and resonance scattering of radiation.

Keywords: astrophysical lasers; astrophysical masers; emission; spectral lines; resonance scattering; radiation

Chapter.  10160 words.  Illustrated.

Subjects: Atomic, Molecular, and Optical Physics

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