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Tuning the scattering length on the ground triplet state of Cs2

J. Chem. Phys. 114, 3046 (2001); doi:10.1063/1.1343080

Issue Date: 15 February 2001

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V. Kokoouline, J. Vala, and R. Kosloff
Fritz Haber Research Center for Molecular Dynamics, Hebrew University of Jerusalem, Jerusalem, 91904, Israel
Two schemes for tuning the scattering length on the ground triplet state of Cs2 are developed. The absolute value of the triplet scattering length of 133Cs2 is determined from the experimental data [A. Fioretti, D. Comparat, C. Drag, C. Amiot, O. Dulieu, F. Masnou-Seeuws, and P. Pillet, Eur. Phys. J. D 5, 389 (1999)], we demonstrate that the large scattering length can be made small and positive by coupling the 3Sigma<sub>u</sub><sup>+</sup>(6S + 6S) potential to the 3Pig state by strong off-resonant radiation. A weaker laser field coupling the 3Sigma<sub>u</sub><sup>+</sup>(6S + 6S) continuum to the lowest bound level of the excited 3Sigma<sub>g</sub><sup>+</sup>(6S + 6P) state also leads to a small positive scattering length. The scattering length of the 135Cs isotope is found to be positive. The method used solves the Schrödinger equation for two electronic states coupled by an electromagnetic field with no approximations employed. The scattering length is determined from the calculated continuum wave functions at low energies. ©2001 American Institute of Physics.
History: Received 20 October 2000; accepted 1 December 2000
Permalink: http://link.aip.org/link/?JCPSA6/114/3046/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.80.-b
    Molecular properties and interactions with photons Photon interactions with molecules
  • 31.90.+s
    Electronic structure of atoms and molecules: theory Other topics in the theory of the electronic structure of atoms and molecules (restricted to new topics in section 31)
  • YEAR: 2001

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ISSN:
0021-9606 (print)   1089-7690 (online)
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