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

• Verfasst von: Shah, Chintan [VerfasserIn]
• Verfasst von: Amaro, Pedro [VerfasserIn]
• Verfasst von: Beilmann, Christian [VerfasserIn]
• Verfasst von: Tashenov, Stanislav [VerfasserIn]
• Titel: Strong higher-order resonant contributions to x-ray line polarization in hot plasmas
• Verf.angabe: Chintan Shah, Pedro Amaro, Rene Steinbrügge, Christian Beilmann, Sven Bernitt, Stephan Fritzsche, Andrey Surzhykov, José R. Crespo López-Urrutia and Stanislav Tashenov
• E-Jahr: 2016
• Jahr: 16 June 2016
• Umfang: 7 S.
• Fussnoten: Gesehen am 05.05.2020
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2016
• Band/Heft Quelle: 93(2016,6) Artikel-Nummer 061201(R), 7 Seiten
• ISSN Quelle: 2470-0053
• DOI: doi:10.1103/PhysRevE.93.061201
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1697235174

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.