Many-electron effects on x-ray Rayleigh scattering by highly charged He-like ions

被引：21

作者：

Volotka, A. V. ^{[1
,2
]}

Yerokhin, V. A. ^{[3
]}

Surzhykov, A. ^{[1
]}

Stoehlker, Th. ^{[1
,4
,5
]}

Fritzsche, S. ^{[1
,5
]}

机构：

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

[2] St Petersburg State Univ, Dept Phys, St Petersburg 198504, Russia

[3] Peter Great St Petersburg Polytech Univ, Ctr Adv Studies, St Petersburg 195251, Russia

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

[5] Univ Jena, Inst Theoret Phys, D-07743 Jena, Germany

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 02期

关键词：

GAMMA-RAYS; ELASTIC-SCATTERING; COHERENT SCATTERING; HEAVY ATOMS; K-ELECTRONS; PHOTONS; POLARIZATION; MERCURY;

D O I：

10.1103/PhysRevA.93.023418

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Rayleigh scattering of x rays by many-electron highly charged ions is studied theoretically. The many-electron perturbation theory, based on a rigorous quantum electrodynamics approach, is developed and implemented for the case of the elastic scattering of ( high-energetic) photons by heliumlike ions. Using this elaborate approach, we here investigate the many-electron effects beyond the independent-particle approximation ( IPA) as conventionally employed for describing the Rayleigh scattering. The total and angle-differential cross sections are evaluated for the x-ray scattering by heliumlike Ni-26+, Xe52+, and Au77+ ions in their ground state. The obtained results show that, for high-energetic photons, the effects beyond the IPA do not exceed 2% for the scattering by a closed K shell.

引用

页数：13

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