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Electron- and proton-impact excitation of hydrogenlike uranium in relativistic collisions

The K shell excitation of H-like uranium (U91+) in relativistic collisions with different gaseous targets has been studied at the experimental storage ring at GSI Darmstadt. By performing measurements with different targets as well as with different collision energies, we were able to observe for th...

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Bibliographic Details
Main Authors: Gumberidze, Alexandre (Author) , Surzhykov, Andrey (Author) , Voitkiv, Alexander B. (Author) , Winters, Danyal Ferdinant Alexander (Author) , Winters, Natalya (Author)
Format: Article (Journal)
Language:English
Published: 21 May 2013
In: Physical review letters
Year: 2013, Volume: 110, Issue: 21
ISSN:1079-7114
DOI:10.1103/PhysRevLett.110.213201
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.110.213201
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.110.213201
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Author Notes:A. Gumberidze, D.B. Thorn, C.J. Fontes, B. Najjari, H.L. Zhang, A. Surzhykov, A. Voitkiv, S. Fritzsche, D. Banaś, H. Beyer, W. Chen, R.D. DuBois, S. Geyer, R.E. Grisenti, S. Hagmann, M. Hegewald, S. Hess, C. Kozhuharov, R. Märtin, I. Orban, N. Petridis, R. Reuschl, A. Simon, U. Spillmann, M. Trassinelli, S. Trotsenko, G. Weber, D.F.A. Winters, N. Winters, D. Yu, and Th. Stöhlker
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Summary:The K shell excitation of H-like uranium (U91+) in relativistic collisions with different gaseous targets has been studied at the experimental storage ring at GSI Darmstadt. By performing measurements with different targets as well as with different collision energies, we were able to observe for the first time the effect of electron-impact excitation (EIE) process in the heaviest hydrogenlike ion. The large fine-structure splitting in H-like uranium allowed us to unambiguously resolve excitation into different L shell levels. State-of-the-art calculations performed within the relativistic framework which include excitation mechanisms due to both protons (nucleus) and electrons are in good agreement with the experimental findings. Moreover, our experimental data clearly demonstrate the importance of including the generalized Breit interaction in the treatment of the EIE process.
Item Description:Gesehen am 11.02.2021
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.110.213201

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