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Title: Paschen-Back effect involving atomic fine and hyperfine structure states
Authors: Sowmya, K
Nagendra, K. N
Sampoorna, M
Stenflo, J. O
Keywords: Atomic processes;Polarization;Scattering;Sun: magnetic fields
Issue Date: Oct-2015
Publisher: Cambridge University Press
Citation: Proceedings of the International Astronomical Union, Vol. 305, pp. 154-158
Series/Report no.: International Astronomical Union Symposium; 305
Abstract: The linear polarization in spectral lines produced by coherent scattering is significantly modified by the quantum interference between the atomic states in the presence of a magnetic field. When magnetic fields produce a splitting which is of the order of or greater than the fine or hyperfine structure splittings, we enter the Paschen-Back effect (PBE) regime, in which the magnetic field dependence of the Zeeman splittings and transition amplitudes becomes non-linear. In general, PBE occurs for sufficiently strong fields when the fine structure states are involved and for weak fields in the case of hyperfine structure states. In this work, we apply the recently developed theory of PBE in the atomic fine and hyperfine structure states including the effects of partial frequency redistribution to the case of Li i 6708 Å doublet. We explore the signatures of PBE in a single scattering event and their applicability to the solar magnetic field diagnostics.
Description: Restricted Access
ISSN: 1743-9213
???metadata.dc.rights???: © International Astronomical Union
Appears in Collections:IIAP Publications

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