Line Formation Theory for the Multiterm Atom with Hyperfine Structure in a Magnetic Field

Details Line Formation Theory for the Multiterm Atom with Hyperfine Structure in a Magnetic Field Line Formation Theory for the Multiterm Atom with Hyperfine Structure in a Magnetic Field

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...624.1025c&link_type=abstract

The Astrophysical Journal, Volume 624, Issue 2, pp. 1025-1037.

Astronomy and Astrophysics

Astronomy

16

Atomic Processes, Line: Profiles, Polarization, Sun: Magnetic Fields

Scientific paper

Within the framework of the quantum theory of polarized line formation, in the limit of complete frequency redistribution and of the collisionless regime, we derive explicit formulae describing the statistical equilibrium and the radiative emission of a multiterm atom with hyperfine structure, in the presence of an external magnetic field. The formulae we obtained for the radiative rates of the statistical equilibrium equations and for the radiative coefficients of the transfer equation for polarized radiation can be applied to investigate the formation of spectral lines for which both fine-structure and hyperfine-structure effects are important (e.g., the D1 and D2 lines of Na I in the solar atmosphere).

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