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Quantum electrodynamics in strong electromagnetic fields: substate resolved Kα transition energies in heliumlike uranium

Using novel metallic magnetic calorimeter detectors at the CRYRINGESR, we recorded x-ray spectra of stored and electron cooled heliumlike uranium (U90+) with an unmatched spectral resolution of close to 90 eV. This allowed for an accurate determination of the energies of all four components of the K...

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Main Authors: Pfäfflein, Philip (Author) , Weber, G. (Author) , Allgeier, Steffen (Author) , Andelkovic, Z. (Author) , Bernitt, S. (Author) , Bondarev, A. I. (Author) , Borovik, A. (Author) , Duval, L. (Author) , Fleischmann, Andreas (Author) , Forstner, O. (Author) , Friedrich, M. (Author) , Glorius, J. (Author) , Gumberidze, A. (Author) , Hahn, Ch. (Author) , Herfurth, F. (Author) , Hengstler, Daniel (Author) , Herdrich, M. O. (Author) , Hillenbrand, P.-M. (Author) , Kalinin, A. (Author) , Kiffer, M. (Author) , Kröger, F. M. (Author) , Kubullek, M. (Author) , Kuntz, P. (Author) , Lestinsky, M. (Author) , Litvinov, Yu. A. (Author) , Löher, B. (Author) , Menz, E. B. (Author) , Over, T. (Author) , Petridis, N. (Author) , Ringleb, S. (Author) , Sidhu, R. S. (Author) , Spillmann, U. (Author) , Trotsenko, S. (Author) , Warczak, A. (Author) , Zhu, B. (Author) , Enss, Christian (Author) , Stöhlker, Th. (Author)
Format: Article (Journal)
Language:English
Published: 14 April, 2025
In: Physical review letters
Year: 2025, Volume: 134, Issue: 15, Pages: 1-17
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.153001
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.134.153001
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.134.153001
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Author Notes:Ph. Pfäfflein, G. Weber, S. Allgeier, Z. Andelkovic, S. Bernitt, A.I. Bondarev, A. Borovik, L. Duval, A. Fleischmann, O. Forstner, M. Friedrich, J. Glorius, A. Gumberidze, Ch. Hahn, F. Herfurth, D. Hengstler, M.O. Herdrich, P.-M. Hillenbrand, A. Kalinin, M. Kiffer, F.M. Kröger, M. Kubullek, P. Kuntz, M. Lestinsky, Yu. A. Litvinov, B. Löher, E.B. Menz, T. Over, N. Petridis, S. Ringleb, R.S. Sidhu, U. Spillmann, S. Trotsenko, A. Warczak, B. Zhu, Ch. Enss, and Th. Stöhlker
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Summary:Using novel metallic magnetic calorimeter detectors at the CRYRINGESR, we recorded x-ray spectra of stored and electron cooled heliumlike uranium (U90+) with an unmatched spectral resolution of close to 90 eV. This allowed for an accurate determination of the energies of all four components of the K⁢𝛼 transitions in U90+. We find good agreement with state-of-the-art bound-state QED calculations for the strong-field regime. Our results do not support any systematic deviation between experiment and theory in heliumlike systems, the presence of which was subject of intense debates in recent years.
Item Description:Veröffentlicht: 14. April 2025
Gesehen am 27.10.2025
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.153001

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