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Prospects for sympathetic cooling of polar molecules : NH with alkali-metal and alkaline-earth atoms - a new hope.

Soldan, Pavel and Zuchowski, Piotr S. and Hutson, Jeremy M. (2009) 'Prospects for sympathetic cooling of polar molecules : NH with alkali-metal and alkaline-earth atoms - a new hope.', Faraday discussions., 142 . pp. 191-201.

Abstract

We explore the potential energy surfaces for NH molecules interacting with alkali-metal and alkaline-earth atoms using highly correlated ab initio electronic structure calculations. The surfaces for interaction with alkali-metal atoms have deep wells dominated by covalent forces. The resulting strong anisotropies will produce strongly inelastic collisions. The surfaces for interaction with alkaline-earth atoms have shallower wells that are dominated by induction and dispersion forces. For Be and Mg the anisotropy is small compared to the rotational constant of NH, so that collisions will be relatively weakly inelastic. Be and Mg are thus promising coolants for sympathetic cooling of NH to the ultracold regime.

Item Type:Article
Additional Information:Cold and Ultracold Molecules Conference 2009, Durham Univ, Durham, ENGLAND, APR 15-17, 2009.
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1039/b822769c
Date accepted:No date available
Date deposited:27 June 2013
Date of first online publication:2009
Date first made open access:No date available

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