Spectral Shape of the Two-Photon Decay of the 2 1S0 State in He-Like Tin

被引：35

作者：

Trotsenko, S. ^{[1
,2
,3
]}

Kumar, A. ^{[2
]}

Volotka, A. V. ^{[4
]}

Banas, D. ^{[5
]}

Beyer, H. F. ^{[2
]}

Braeuning, H. ^{[2
]}

Fritzsche, S. ^{[2
]}

Gumberidze, A. ^{[6
]}

Hagmann, S. ^{[1
,2
]}

Hess, S. ^{[1
,2
]}

Jagodzinski, P. ^{[5
]}

Kozhuharov, C. ^{[2
]}

Reuschl, R. ^{[7
,8
]}

Salem, S. ^{[1
,2
]}

Simon, A. ^{[9
]}

Spillmann, U. ^{[2
]}

Trassinelli, M. ^{[7
,8
]}

Tribedi, L. C. ^{[10
]}

Weber, G. ^{[2
,11
]}

Winters, D. ^{[2
]}

Stoehlker, Th. ^{[2
,3
,11
]}

机构：

[1] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[3] Helmholtz Inst Jena, D-07743 Jena, Germany

[4] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany

[5] Jan Kochanowski Univ Humanities & Sci, Inst Phys, PL-25406 Kielce, Poland

[6] GSI, EMMI, D-64291 Darmstadt, Germany

[7] Univ Paris 06, F-75015 Paris, France

[8] CNRS, Inst Nanosci Paris, F-75015 Paris, France

[9] Jagiellonian Univ, Inst Phys, Krakow, Poland

[10] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India

[11] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 03期

关键词：

HELIUM-LIKE IONS; HYDROGENLIKE; EMISSION;

D O I：

10.1103/PhysRevLett.104.033001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectral distribution of the 1s2s S-1(0) -> 1s(2) S-1(0) 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.

引用

页数：4

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