Bonn 2025 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 2: Precision Spectroscopy of Atoms and Ions I (joint session A/Q)
A 2.6: Vortrag
Montag, 10. März 2025, 12:30–12:45, HS PC
High-Resolution Dielectronic Recombination of Berylliumlike Gold Ions in the Electron Cooler of the Cryring@ESR Storage Ring — •Mirko Looshorn1, 2, Carsten Brandau3, Mike Fogle4, Jan Glorius3, Elena Hanu3, 5, Volker Hannen6, Pierre-Michel Hillenbrand3, Claude Krantz3, Michael Lestinsky3, Esther Menz3, 5, 7, Reinhold Schuch8, Uwe Spillmann3, Ken Ueberholz6, Shuxing Wang1, 2, and Stefan Schippers1, 2 — 1I. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Giessen, Germany — 2Helmholz Forschungsakademie Hessen für FAIR (HFHF), Campus Giessen, 35392 Giessen, Germany — 3GSI, Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany — 4Department of Physics, Auburn University, AL 36832, USA — 5Helmholtz-Institut Jena, 07743 Jena, Germany — 6Institut für Kernphysik, Universität Münster, 48149 Münster, Germany — 7Institute for Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany — 8Department of Physics, Stockholm University, 10691 Stockholm, Sweden
We report on the results of an electron-ion collision experiment with berylliumlike gold ions, which were injected into Cryring@ESR from the full chain of GSI accelerators. Measurements were carried out in the collision-energy range 0-300 eV, where the 2s2p (3P1) nl dielectronic recombination (DR) resonances with n=19-21 occur, which are associated with the 2s2 1S0 → 2s2p 3P1 excitation of the Be-like ion core. We will present preliminary comparisons of our experimental DR spectra with corresponding theoretical results.
Keywords: Dielectronic Recombination; Highly Charged Ions; Electron Spectroscopy