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Angular correlations in two-photon spectroscopy of hydrogen
Physical Review A ( IF 2.9 ) Pub Date : 2021-02-26 , DOI: 10.1103/physreva.103.022833
A. Anikin , T. Zalialiutdinov , D. Solovyev

In the present paper, we consider nonresonant corrections to 2sns/nd transition frequencies in hydrogen for the experiments based on two-photon spectroscopy. A detailed study of angular correlations of quantum interference effects within the framework of rigorous quantum electrodynamics is given. Closed expressions for the resonant two-photon-scattering cross sections on an atomic level with dependence on all atomic quantum numbers including fine and hyperfine structure are derived. These expressions are applied for the description of experiments based on two-photon spectroscopy with fixing of incident (outgoing) photon polarizations. We demonstrate that, for certain experimental geometries, nonresonant corrections could be significant for the determination of Rydberg constant and proton charge radius.

中文翻译:

氢的双光子光谱中的角度相关性

在本文中,我们考虑了非共振校正 2个s-ñs/ñd基于双光子光谱的实验中氢的跃迁频率。在严格的量子电动力学框架内,对量子干涉效应的角度相关性进行了详细的研究。推导了原子级共振双光子散射截面的闭合表达式,该截面依赖于包括精细和超精细结构在内的所有原子量子数。这些表达式可用于描述基于双光子光谱并固定入射(输出)光子极化的实验。我们证明,对于某些实验几何形状,非共振校正对于确定Rydberg常数和质子电荷半径可能很重要。
更新日期:2021-02-26
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