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arXiv · 1711.10036

Long-Range Interactions for Hydrogen: 6P-1S and 6P-2S

U. D. Jentschura·C. M. Adhikari
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Abstract

The collisional shift of a transition constitutes an important systematic effect in high-precision spectroscopy. Accurate values for van der Waalsinteraction coefficients are required in order to evaluate the distance-dependent frequency shift. We here consider the interaction of excited hydrogen 6P atoms with metastable atoms (in the 2S state), in order to explore the influence of quasi-degenerate 2P, and 6S states on the dipole-dipole interaction. The motivation for the calculation is given by planned high-precision measurements of the transition. Due to the presence of quasi-degenerate levels, one can use the non-retarded approximation for the interaction terms over wide distance ranges.

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U. D. Jentschura, C. M. Adhikari. 2017-11-27. Long-Range Interactions for Hydrogen: 6P-1S and 6P-2S. https://doi.org/10.3390/atoms5040048

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