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| Paper: |
Polarized Scattering Matrix for Magnetic Dipole Transitions |
| Volume: |
526, Solar Polarization Workshop 8 |
| Page: |
207 |
| Authors: |
Megha, A.; Sampoorna, M.; Nagendra, K. N.; Sankarasubramanian, K. |
| Abstract: |
Forbidden emission lines, produced by magnetic dipole (M1) transitions,
are difficult to observe in the laboratory, but naturally arise
in the highly ionized atoms present in the solar corona.
The polarization of these lines is the result of anisotropic
excitation processes.
The polarization measurement of forbidden emission lines is the
most direct method of determining the magnetic field direction in
the solar corona.
Here we consider the general case of M1 transitions in the presence of
magnetic fields of arbitrary strength.
In particular, we derive the scattering matrix for the M1 transitions
using the classical magnetic dipole oscillator model of
Casini & Lin (2002) and applying the scattering matrix approach of Stenflo (1998).
The derived scattering matrix covers, in a continuous way, saturated Hanle,
intermediate Hanle-Zeeman, and Zeeman regimes. |
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