Fritzsche Stephan, Surzhykov Andrey, Stöhlker Thomas
GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany.
Phys Rev Lett. 2009 Sep 11;103(11):113001. doi: 10.1103/PhysRevLett.103.113001. Epub 2009 Sep 10.
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.
布赖特相互作用通常表现为对电子间库仑排斥力或多或少的微小修正。我们在此提出两项关于高Z类铍离子1s2s(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的X射线测量，这是在初始类锂离子发生共振电子俘获之后进行的，对于这种情况，布赖特相互作用强烈地主导库仑排斥力，并导致预期X射线发射模式发生质的变化。所提出的测量用当今的X射线探测器是可行的，并且可对强场存在下电子-电子相互作用的相对论修正进行严格检验。
