Two-photon energy distribution from the decay of the 2 1S0 state in He-like uranium

We have performed a measurement of the spectral shape from the two-photon decay of the 1s2s1S0 state in He-like uranium. The two-photon emission followed the ionization of initially Li-like uranium ions in collisions with a N2 gas-jet target. The measured shape of the two-photon energy distribution...

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Main Authors: Banaś, Dariusz (Author) , Gumberidze, A. (Author) , Trotsenko, S. (Author) , Volotka, A. V. (Author) , Surzhykov, Andrey (Author) , Beyer, H. F. (Author) , Bosch, F. (Author) , Bräuning-Demian, A. (Author) , Fritzsche, S. (Author) , Hagmann, S. (Author) , Kozhuharov, C. (Author) , Kumar, A. (Author) , Ma, X. (Author) , Mann, R. (Author) , Mokler, P. H. (Author) , Sierpowski, D. (Author) , Spillmann, U. (Author) , Tashenov, Stanislav (Author) , Stachura, Z. (Author) , Warczak, A. (Author) , Stöhlker, Th. (Author)
Format: Article (Journal)
Language:English
Published: 21 June 2013
In: Physical review. A, Atomic, molecular, and optical physics
Year: 2013, Volume: 87, Issue: 6
ISSN:1094-1622
DOI:10.1103/PhysRevA.87.062510
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.87.062510
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.87.062510
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Author Notes:D. Banaś, A. Gumberidze, S. Trotsenko, A.V. Volotka, A. Surzhykov, H.F. Beyer, F. Bosch, A. Bräuning-Demian, S. Fritzsche, S. Hagmann, C. Kozhuharov, A. Kumar, X. Ma, R. Mann, P.H. Mokler, D. Sierpowski, U. Spillmann, S. Tashenov, Z. Stachura, A. Warczak, and Th. Stöhlker
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Summary:We have performed a measurement of the spectral shape from the two-photon decay of the 1s2s1S0 state in He-like uranium. The two-photon emission followed the ionization of initially Li-like uranium ions in collisions with a N2 gas-jet target. The measured shape of the two-photon energy distribution shows good agreement with results of the relativistic calculations that take into account the electron-electron interaction rigorously up to the first order in quantum electrodynamic perturbation expansion. From the full width at half maximum of the measured two-photon energy distribution, we confirm the theoretically predicted modification of the shape due to the relativistic effects.
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Physical Description:Online Resource
ISSN:1094-1622
DOI:10.1103/PhysRevA.87.062510