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A: Fachverband Atomphysik
A 14: Interaction with VUV and X-ray light
A 14.1: Hauptvortrag
Mittwoch, 16. März 2022, 10:30–11:00, A-H1
Synchrotron radiation experiments with highly charged ions — •Jose R. Crespo López-Urrutia1, Steffen Kühn1, Moto Togawa1, Marc Botz1, Jonas Danisch1, Joschka Goes1, René Steinbrügge2, Sonja Bernitt1,3, Chintan Shah1,4, Maurice A. Leutenegger4, Ming Feng Gu5, Marianna Safronova6, Jakob Stierhof7, Thomas Pfeifer1, and Jörn Wilms7 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 2DESY, 22607 Hamburg, Germany — 3Helmholtz-Institut Jena, 07743 Jena, Germany — 4NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA — 5Space Sciences Laboratory, UC Berkeley, CA 94720, USA — 6Dept. of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA — 7Dr. Karl Remeis-Observatory, 96049 Bamberg, Germany
Synchrotrons provide intense, highly monochromatic X-rays which we use for exciting highly charged ions (HCI) produced and confined in electron beam ion traps. This gives access to a regime of radiation-matter interaction dominant in hot astrophysical plasmas such as active galactic nuclei, accretion disks, and stellar radiative cores as well as coronae. Unlike neutrals, HCI thrive under those extreme conditions, modifying energy transfer and delivering spectral lines for diagnostics. Space missions need laboratory-tested theory for their science goals. We study X-ray photoexcitation and photoionization of HCI, test the related theory with unprecedented accuracy, solve two longstanding astrophysical questions, and enable future stringent tests of quantum electrodynamic calculations in complex isoelectronic sequences.