Observation of the pure long-range 1u state of an alkali-metal dimer by photoassociative spectroscopy

Xiaotian Wang, He Wang, Phillip L. Gould, William C. Stwalley, Eite Tiesinga, and Paul S. Julienne
Phys. Rev. A 57, 4600 – Published 1 June 1998
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Abstract

The pure long-range 1u state of an alkali-metal dimer is observed in 39K2 using photoassociative spectroscopy of ultracold atoms. High-resolution spectra for vibrational levels v=07 are recorded by resonance-enhanced two-photon ionization. Strong rotation-hyperfine couplings are observed. Major molecular constants and a hyperfine structure analysis are presented. This 1u state is useful as an ungerade Franck-Condon “window” at large internuclear distance for studies of highly excited long-range interactions.

  • Received 2 October 1997

DOI:https://doi.org/10.1103/PhysRevA.57.4600

©1998 American Physical Society

Authors & Affiliations

Xiaotian Wang, He Wang*, Phillip L. Gould, and William C. Stwalley*,†

  • Department of Physics, University of Connecticut, Storrs, Connecticut 06269

Eite Tiesinga

  • Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742

Paul S. Julienne

  • Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899

  • *Also at Institute of Materials Science, University of Connecticut, Storrs, CT 06269.
  • Also at Department of Chemistry, University of Connecticut, Storrs, CT 06269.

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Vol. 57, Iss. 6 — June 1998

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