Hyperfine-frequency shifts of alkali-metal atoms during long-range collisions
Atomic Physics
2013-06-04 v1
Abstract
Collisions with chemically inert atoms or molecules change the hyperfine coupling of an alkali-metal atom through the hyperfine-shift interaction. This interaction is responsible for the pressure shifts of the microwave resonances of alkali-metal atoms in buffer gases, is an important spin interaction in alkali-metal--noble-gas van der Waals molecules, and is anticipated to enable the magnetoassociation of ultracold molecules such as RbSr. An improved estimate is presented for the long-range asymptote of this interaction for Na, K, Rb, and Cs. To test the results, the change in hyperfine coupling due to a static electric field is estimated and reasonable agreement is found.
Keywords
Cite
@article{arxiv.1306.0048,
title = {Hyperfine-frequency shifts of alkali-metal atoms during long-range collisions},
author = {B. H. McGuyer},
journal= {arXiv preprint arXiv:1306.0048},
year = {2013}
}
Comments
5 pages