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  Admixture of Dipole and Quadrupole Atomic Transitions in the Presence of External Magnetic Field

Oo, Y. Y., Thant, W. M., Nagendra, K., & Ramachandran, G. (2019). Admixture of Dipole and Quadrupole Atomic Transitions in the Presence of External Magnetic Field. In A. M. Gandorfer, A. Lagg, & K. Raab (Eds.), Proceedings of the 9th Solar Polarization Workshop SPW9. doi:10.17617/2.3188298.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-B6A0-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-B6A3-5
Genre: Conference Paper

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 Creators:
Oo, Yee Yee1, Author
Thant, Win Moe1, Author
Nagendra, K.N.1, Author
Ramachandran, G.1, Author
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1External Organizations, ou_persistent22              

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 Abstract: The admixture effect of dipole and quadrupole type atomic transitions on the Stokes parameters characterizing the emitted radiation in the presence of an external magnetic field is studied. The transition from an upper level with angular momentum Ju = 3/2 to a lower level with angular momentum Jl = 1/2 is considered to take account of the admixture effect. The analytical expressions showing the emitted Stokes parameters for the case of upper and lower levels having same parities are derived. It is shown that the radiative transition probabilities of magnetic dipole (M1) and electric quadrupole transition (E2) are more intense than those of electric dipole transition (E1) and magnetic quadrupole transition (M2). The polarization components that are not usually seen in the Stokes I; Q and V profiles appear due to the admixture effect. The interference of the polarization components with opposite signs is responsible for the smaller strength of Stokes I; Q; V in admixture transition compared to those observed in pure transition. In pure dipole transition case, U Stokes profile is always zero for all emitted radiation directions. However, the Stokes U profile arises only due to the admixture effect.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published online
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 Identifiers: DOI: 10.17617/2.3188298
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Title: Proceedings of the 9th Solar Polarization Workshop SPW9
Source Genre: Proceedings
 Creator(s):
Gandorfer, Achim M.1, Editor            
Lagg, Andreas1, Editor            
Raab, Kerstin2, Editor
Affiliations:
1 Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289            
2 Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1125546            
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