Dominance of the Breit interaction in the x-ray emission of highly charged ions following dielectronic recombination.
Dominance of the Breit interaction in the x-ray emission of highly charged ions following dielectronic recombination.
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DOI：
10.1103/physrevlett.103.113001
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发表时间：
2009-09
影响因子：
8.6
通讯作者：
S. Fritzsche;A. Surzhykov;T. Stöhlker
中科院分区：
文献类型：
--
作者：
S. Fritzsche;A. Surzhykov;T. Stöhlker
Breit相互作用通常表现为对电子之间的库仑排斥作用的或多或少的修正。本文提出了两种X射线测量方法，测量了类锂离子1s_2s(2)2p(1/2)J=1-->；1s(2)2s(2)J=0电偶极辐射的角分布和线偏振度。所提出的测量方法在目前的X射线探测器上是可行的，并可能对强场下电子-电子相互作用的相对论修正进行严格的检验。
The Breit interaction typically appears as a-more or less small-correction to the Coulomb repulsion acting among the electrons. We here propose two x-ray measurements on the angular distribution and linear polarization of the 1s2s(2)2p(1/2) J=1-->1s(2)2s(2) J=0 electric-dipole radiation of high-Z, beryllium-like ions, following the resonant electron capture into initially lithium-like ions, for which the Breit interaction strongly dominates the Coulomb repulsion and leads to a qualitative change in the expected x-ray emission pattern. The proposed measurements are feasible with present-day x-ray detectors and may serve a stringent test on relativistic corrections to the electron-electron interaction in the presence of strong fields.