X-ray and extreme-ultraviolet spectra from collisions of Ar$$^{18+}$$ and O$$^{8+}$$ ions with neutrals
Abstract We present measurements of K-shell X-ray emission following charge exchange of fully ionized argon with various neutral gaseous targets at small collision energies inside an electron beam ion trap. We also resolve the principal quantum number of electron capture in extreme-ultraviolet spectra from initially bare and hydrogen-like oxygen ions held in the same trap. We analyze discrepancies between these as well as previous measurements with theoretical models based on the multichannel Landau–Zener approach.
Authors
- J. R. Crespo López-Urrutia (ORCID: https://orcid.org/0000-0002-2937-8037)
- T Pfeifer
- S. Bernitt (ORCID: https://orcid.org/0000-0002-1976-5121)
- Stepan Dobrodey
- Chintan Shah
- Liyi Gu
- Ming Feng Gu
Institutions
- Helmholtz Institute Jena (DE)
- Goddard Space Flight Center (US)
- Johns Hopkins University (US)
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Max Planck Institute for Nuclear Physics (DE)
- Space Research Organisation Netherlands (NL)
Publication Details
- Journal
- The European Physical Journal Special Topics
- Published
- 2026-07-18
- DOI
- https://doi.org/10.1140/epjs/s11734-026-02492-8
- Primary Topic
- Atomic and Molecular Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Max Planck Institute for Nuclear Physics