Long-Range Interactions for Hydrogen: 6P-1S and 6P-2S
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.
Cite
@article{arxiv.1711.10036,
title = {Long-Range Interactions for Hydrogen: 6P-1S and 6P-2S},
author = {U. D. Jentschura and C. M. Adhikari},
journal= {arXiv preprint arXiv:1711.10036},
year = {2017}
}
Comments
13 pages; RevTeX; accepted for publication in the journal "Atoms" (special issue on high-precision spectroscopy)