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Journal Article

Strong higher-order resonant contributions to x-ray line polarization in hot plasmas

MPS-Authors
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Shah,  Chintan
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Steinbrügge,  René Friedrich
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Beilmann,  Christian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Bernitt,  Sven
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia,  José R.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

External Ressource
Fulltext (public)

1606.06776v1
(Preprint), 2MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Shah, C., Amaro, P., Steinbrügge, R. F., Beilmann, C., Bernitt, S., Fritzsche, S., et al. (2016). Strong higher-order resonant contributions to x-ray line polarization in hot plasmas. Physical Review E, 93(6): 061201(R). doi:10.1103/PhysRevE.93.061201.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-1FC8-6
Abstract
We studied angular distributions of x rays emitted in resonant recombination of highly charged iron and krypton ions, resolving dielectronic, trielectronic, and quadruelectronic channels. A tunable electron beam drove these processes, inducing x rays registered by two detectors mounted along and perpendicular to the beam axis. The measured emission asymmetries comprehensively benchmarked full-order atomic calculations. We conclude that accurate polarization diagnostics of hot plasmas can only be obtained under the premise of inclusion of higher-order processes that were neglected in earlier work.