Partial frequency redistribution with Hanle and Zeeman effects. Non-perturbative classical theory

Details Partial frequency redistribution with Hanle and Zeeman effects. Non-perturbative classical theory Partial frequency redistribution with Hanle and Zeeman effects. Non-perturbative classical theory

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...350..327b&link_type=abstract

Astronomy and Astrophysics, v.350, p.327-333 (1999)

Astronomy and Astrophysics

Astrophysics

19

Atomic Processes, Line: Formation, Scattering, Polarization, Magnetic Fields, Radiative Transfer

Scientific paper

A theory for the scattering of polarized radiation with partial frequency redistribution and coherence effects in the presence of magnetic fields of arbitrary strength and direction is developed within a classical framework. The time-dependent equation for a classical oscillator is solved. While the oscillator is being excited, it is also damped by emission of radiation and subject to phase-destroying collisions. Fourier transformation of the emitted wave train with phase-scrambling collisions leads to the partial-redistribution expressions for the relation between the polarization and frequencies of the incident and scattered radiation. While previous treatments of partial redistribution have been based on quantum perburbation theory, the classical theory has the advantage of being fully non-perturbative. It is therefore conceptually more transparent and leads itself to direct physical interpretation. The classical and quantum theories give identical results for a J=0-> 1-> 0 transition.

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