https://doi.org/10.1140/epjs/s11734-026-02258-2
Regular Article
First ReMi experiments at a cryogenic ion storage ring
1
Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117, Heidelberg, Germany
2
Physics Department, Missouri University of Science & Technology, 65409, Rolla, MO, USA
a
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Received:
3
December
2025
Accepted:
3
March
2026
Published online:
14
March
2026
Abstract
We have recorded double, triple, and quadruple coincidences between neutralized projectiles, recoiling target ions, and two electrons created in collisions of slow anions with neutral atoms. The experiments were performed at the cryogenic storage ring in Heidelberg. The recoil ions and ejected electrons were momentum-analyzed using a Reaction Microscope (ReMi) spectrometer. Various processes involving electron detachment from the projectile accompanied by various transitions in the target were investigated. Detachment without any transition in the target is qualitatively well described by a quasi-free electron model in the case of an Ar target. In detachment with single target ionization, no signatures of uncorrelated channels were observed, while contributions from a correlated process could be surprisingly strong.
© The Author(s) 2026
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