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Sensitivity of the dynamics of Na + Na\(\mathsf{_2}\) collisions on the three-body interaction at ultralow energies

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Abstract.

We have studied the quantum dynamics of collisions between spin-stretched Na atoms and Na2 molecules. Cross-sections and rate coefficients for vibrational relaxation of Na2(v,j = 0) have been computed in the 1 nK-0.1 mK energy range using an accurate time-independent method based on hyperspherical coordinates. The complex scattering length and the extension of the Wigner region have been determined. A detailed study of the sensitivity of collisional quantities on the three-body interaction at short distance has been performed. They are very sensitive to three-body effects for the vibrational state v = 1 of Na2. Rotational distributions have also been calculated and show a more pronounced sensitivity on the three-body interaction, even for v = 2 and 3.

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Authors and Affiliations

  1. PALMS, UMR 6627 du CNRS, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France

    G. Quéméner, P. Honvault & J.-M. Launay

Authors
  1. G. Quéméner
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  2. P. Honvault
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  3. J.-M. Launay
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Corresponding author

Correspondence to P. Honvault.

Additional information

Received: 29 March 2004, Published online: 22 June 2004

PACS:

34.50.-s Scattering of atoms and molecules

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Quéméner, G., Honvault, P. & Launay, JM. Sensitivity of the dynamics of Na + Na\(\mathsf{_2}\) collisions on the three-body interaction at ultralow energies. Eur. Phys. J. D 30, 201–207 (2004). https://doi.org/10.1140/epjd/e2004-00078-2

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