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Spectral shape of the two-photon decay of the 21S0 state in He-like tin

The spectral distribution of the 1s2s 1S0→1s2 1S0 two-photon decay of He-like tin was measured using a novel approach at the gas-jet target of the ESR storage ring. Relativistic collisions of Li-like projectiles with low-density gaseous matter have been exploited to selectively populate the desired...

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Main Authors: Trotsenko, Sergiy (Author) , Kumar, A. (Author) , Volotka, A. V. (Author) , Banaś, D. (Author) , Beyer, H. F. (Author) , Bräuning, H. (Author) , Fritzsche, S. (Author) , Gumberidze, A. (Author) , Hagmann, S. (Author) , Hess, S. (Author) , Jagodziński, P. (Author) , Kozhuharov, C. (Author) , Reuschl, R. (Author) , Salem, S. (Author) , Simon, A. (Author) , Spillmann, U. (Author) , Trassinelli, M. (Author) , Tribedi, L. C. (Author) , Weber, Günter (Author) , Winters, D. (Author) , Stöhlker, Thomas (Author)
Format: Article (Journal)
Language:English
Published: 21 January 2010
In: Physical review letters
Year: 2010, Volume: 104, Issue: 3, Pages: 1-4
ISSN:1079-7114
DOI:10.1103/PhysRevLett.104.033001
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.104.033001
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.104.033001
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Author Notes:S. Trotsenko, A. Kumar, A.V. Volotka, D. Banaś, H.F. Beyer, H. Bräuning, S. Fritzsche, A. Gumberidze, S. Hagmann, S. Hess, P. Jagodziński, C. Kozhuharov, R. Reuschl, S. Salem, A. Simon, U. Spillmann, M. Trassinelli, L.C. Tribedi, G. Weber, D. Winters, and Th. Stöhlker
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Summary:The spectral distribution of the 1s2s 1S0→1s2 1S0 two-photon decay of He-like tin was measured using a novel approach at the gas-jet target of the ESR storage ring. Relativistic collisions of Li-like projectiles with low-density gaseous matter have been exploited to selectively populate the desired 1s2s state. Compared to conventional techniques, this approach results in a substantial gain in statistical and systematic accuracy, which allowed us to achieve for the first time a sensitivity to relativistic effects on the two-photon decay spectral shape as well as to discriminate the measured spectrum for Sn from theoretical shapes for different elements along the He-isoelectronic sequence.
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Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.104.033001

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