- Tytuł:
- Quantum electrodynamics in strong electromagnetic fields : substate resolved K$\alpha$ transition energies in heliumlike uranium
- Autorzy:
-
Kalinin, A.
Kröger, F. M.
Bondarev, A. I.
Kubullek, M.
Löher, B.
Stöhlker, Th.
Kiffer, M.
Trotsenko, S.
Borovik, A.
Fleischmann, A.
Zhu, B.
Forstner, O.
Sidhu, R. S.
Herdrich, M. O.
Enss, Ch.
Spillmann, U.
Petridis, N.
Over, T.
Bernitt, S.
Weber, G.
Allgeier, S.
Friedrich, M.
Hengstler, D.
Ringleb, S.
Andelkovic, Z.
Duval, L.
Litvinov, Yu. A.
Kuntz, P.
Menz, E. B.
Pfäfflein, Ph.
Herfurth, F.
Warczak, Andrzej
Gumberidze, A.
Glorius, J.
Hillenbrand, P.-M.
Hahn, Ch.
Lestinsky, M. - Opis:
- Using novel metallic magnetic calorimeter detectors at the CRYRING@ESR, 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 K𝛼 transitions in U$^{90+}$. 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.
- Dostawca treści:
- Repozytorium Uniwersytetu Jagiellońskiego
Artykuł