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

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 per...

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Hauptverfasser: Shah, Chintan (VerfasserIn) , Amaro, Pedro (VerfasserIn) , Beilmann, Christian (VerfasserIn) , Tashenov, Stanislav (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 16 June 2016
In: Physical review
Year: 2016, Jahrgang: 93, Heft: 6
ISSN:2470-0053
DOI:10.1103/PhysRevE.93.061201
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevE.93.061201
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevE.93.061201
Volltext
Verfasserangaben:Chintan Shah, Pedro Amaro, Rene Steinbrügge, Christian Beilmann, Sven Bernitt, Stephan Fritzsche, Andrey Surzhykov, José R. Crespo López-Urrutia and Stanislav Tashenov
Beschreibung
Zusammenfassung: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.
Beschreibung:Gesehen am 05.05.2020
Beschreibung:Online Resource
ISSN:2470-0053
DOI:10.1103/PhysRevE.93.061201

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