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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 Novotný21I. 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.

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