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A unifying polarization formalism for electric- and magnetic-multipole interactions

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arxiv 2409.01197 v2 pith:ENJN3O2C submitted 2024-09-02 physics.atom-ph astro-ph.SRquant-ph

classification physics.atom-phastro-ph.SRquant-ph
keywords fieldformalismpolarizationradiationdescribingelectric-magnetic-multipolespherical
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We extend the spherical tensorial formalism for polarization to the treatment of electric- and magnetic-multipole transitions of any order. We rely on the spherical-wave expansion to derive the tensor form of the operator describing the interaction of the atomic system with a polarized radiation field, which naturally leads to the introduction of spherical tensors describing the polarization properties of the interacting field. As a direct application, the formalism is used to model the radiation anisotropy affecting the scattering of radiation in an electric-quadrupole transition, and the associated Hanle effect in the presence of a magnetic field.

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  1. P-CORONA: A New Tool for Calculating the Intensity and Polarization of Coronal Lines in 3D Models of the Solar Corona

    astro-ph.SR 2025-05 conditional novelty 6.0 of 10

    P-CORONA computes Stokes I, Q, U, V for forbidden and permitted coronal lines in 3D MHD models with full Hanle and Zeeman treatment.

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