Scattering lengths for collisions between sodium and potassium atoms

Authors: Venturi V.1; Jamieson M.J.1; Ct R.2

Source: Journal of Physics B: Atomic, Molecular and Optical Physics, Volume 34, Number 22, 2001 , pp. 4339-4347(9)

Publisher: Institute of Physics Publishing

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Abstract:

The scattering lengths that characterize the low-energy elastic scattering of 23Na atoms by 39K, 40K and 41K atoms, when they interact via the X 1+ and a 3+ states of the NaK dimer, are calculated. The systematic variation of the short- and long-range parts of the interaction potentials reveals that the calculated scattering lengths are sensitive to uncertainties in the potentials. It is concluded that precise spectroscopic measurements of the least-bound ro-vibrational levels supported by the ground electronic state, which would reduce the uncertainties in both the molecular potentials, are needed for an accurate determination of the scattering lengths.

Language: English

Document Type: Miscellaneous

Affiliations: 1: Department of Computing Science, University of Glasgow, Glasgow, G12 8QQ, UK 2: Department of Physics, University of Connecticut, Storrs, CT 06269-3046, USA

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