Long-Range Interactions for Hydrogen: 6P–1S and 6P–2S Systems
Department of Physics, Missouri University of Science and Technology, Rolla, MO 65409, USA
Author to whom correspondence should be addressed.
Received: 30 August 2017 / Revised: 24 October 2017 / Accepted: 16 November 2017 / Published: 23 November 2017
The collisional shift of a transition constitutes an important systematic effect in high-precision spectroscopy. Accurate values for van der Waals interaction coefficients are required in order to evaluate the distance-dependent frequency shift. We here consider the interaction of excited hydrogen
atoms with metastable atoms (in the
state), in order to explore the influence of quasi-degenerate
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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MDPI and ACS Style
Jentschura, U.D.; Adhikari, C.M. Long-Range Interactions for Hydrogen: 6P–1S and 6P–2S Systems. Atoms 2017, 5, 48.
Jentschura UD, Adhikari CM. Long-Range Interactions for Hydrogen: 6P–1S and 6P–2S Systems. Atoms. 2017; 5(4):48.
Jentschura, Ulrich D.; Adhikari, Chandra M. 2017. "Long-Range Interactions for Hydrogen: 6P–1S and 6P–2S Systems." Atoms 5, no. 4: 48.
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