Erlangen 2022 – scientific programme
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A: Fachverband Atomphysik
A 17: Collisions, scattering and correlation phenomena
A 17.4: Talk
Wednesday, March 16, 2022, 15:00–15:15, A-H1
Dielectronic recombination of Ne2+ at the Cryogenic Storage Ring — •Leonard W. Isberner1, Manfred Grieser2, Robert von Hahn2, Zoltán Harman2, Ábel Kálosi3, Christoph H. Keitel2, Claude Krantz4, Daniel Paul3, Stefan Schippers1, Suvam Singh2, Andreas Wolf2, and Oldřich Novotný2 — 1I. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany — 2Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 3Columbia Astrophysics Laboratory, Columbia University, New York, 10027 New York, USA — 4GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
In the past three decades, electron-ion recombination has been successfully investigated by employing the merged-beams technique in magnetic heavy-ion storage rings. Because of the limited magnetic rigidity, recombination studies were restricted to ions with low mass-over-charge ratio. The combination of mass-independent storage in electrostatic storage rings with the excellent vacuum conditions of cryogenic environments is a promising approach to enable the investigation of recombination processes in low-charged heavy ions, which are important, e.g., for astrophysics. Here we report on a first recombination study of Ne2+ + e− → Ne+ in the electrostatic Cryogenic Storage Ring (CSR) located at the Max Planck Institute for Nuclear Physics in Heidelberg. We have observed resonant recombination features in agreement with quantum-theoretical predictions. Our results clearly demonstrate the feasibility of atomic recombination studies with heavier species at CSR.