Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/5614
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dc.contributor.authorSmitha, H. N-
dc.contributor.authorNagendra, K. N-
dc.contributor.authorSampoorna, M-
dc.contributor.authorStenflo, J. O-
dc.date.accessioned2011-11-16T05:39:21Z-
dc.date.available2011-11-16T05:39:21Z-
dc.date.issued2011-11-
dc.identifier.citationAstronomy & Astrophysics, Vol. 535, A35en
dc.identifier.urihttp://hdl.handle.net/2248/5614-
dc.description.abstractContext. Quantum interference phenomena play a fundamental role in the formation of linear polarization that arises from scattering processes in multiplets of the solar spectrum. In particular, the J-state interference between different line components of a multiplet (arising from transitions in a two-term atom) produces significant effects in the linearly polarized spectra. Aims. We aim to solve the polarized radiative transfer equation for a two-term atom with the unpolarized lower term in isothermal slabs, including the effect of the interference between the upper J-states and partial frequency redistribution (PRD). We consider only the case of non-magnetic scattering. Methods. The PRD matrix for the J-state interference derived in previous works is incorporated into the polarized transfer equation. The standard form of the two-level atom transfer equation is extended to a two-term atom. The transfer problem is then solved using a traditional polarized approximate lambda iteration method. Results. We show how the PRD and the J-state interference together affect the shapes of the (I,Q/I) profiles. We present the benchmark solutions for isothermal, constant-property slabs of a given optical thickness. We consider a hypothetical doublet produced by an L = 0 → 1 → 0 scattering transition with spin S = 1/2. We present the results in the form of Stokes (I,Q/I) profiles for different values of (i) the line separation, (ii) optical thickness, (iii) thermalization parameter, and (iv) the continuum opacity.en
dc.language.isoenen
dc.publisherEDP Sciencesen
dc.relation.urihttp://dx.doi.org/10.1051/0004-6361/201117550en
dc.rights© ESOen
dc.subjectLine: formationen
dc.subjectMethods: numericalen
dc.subjectPolarizationen
dc.subjectRadiative transfeen
dc.subjectScatteringen
dc.subjectSun: atmosphereen
dc.titleRadiative transfer with J-state interference in a two-term atom Partial frequency redistribution in the non-magnetic caseen
dc.typeArticleen
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