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Two-Color Photoassociation Spectroscopy of Ytterbium Atoms and the Precise Determinations of s-Wave Scattering Lengths

Published

Author(s)

M Kitagawa, K Enomoto, K Kasa, Yasuo Takahashi, R Ciurylo, Pascal Naidon, Paul S. Julienne

Abstract

By performing high-resolution two-color photoassociation spectroscopy, we have successfully de-termined the binding energies of several of the last bound states of the homonulcear dimers of six different isotopes of ytterbium. These spectroscopic data are in excellent agreement with theoretical calculations based on a simple model potential, which very precisely predicts the s-wave scattering lengths of all 28 pairs of the seven stable isotopes. The s-wave scattering lengths for collision of two atoms of the same isotopic species are 13.33(18) nm for 168Yb, 3.38(11) nm for 170Yb, -0.15(19) nm for 171Yb, -31.7(3.4) nm for 172Yb, 10.55(11) nm for 173Yb, 5.55(8) nm for 174174Yb, and -1.28(23) nm for 176Yb. The coefficient of the lead term of the long-range van der Waals potential of the Yb2 molecule is C6 = 1932(30) atomic units (Eha60).
Citation
Physical Review A (Atomic, Molecular and Optical Physics)

Keywords

binding energy, isotopes, photoassociation, scattering length, ultracold, ytterbium

Citation

Kitagawa, M. , Enomoto, K. , Kasa, K. , Takahashi, Y. , Ciurylo, R. , Naidon, P. and Julienne, P. (2021), Two-Color Photoassociation Spectroscopy of Ytterbium Atoms and the Precise Determinations of s-Wave Scattering Lengths, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed March 1, 2024)
Created October 12, 2021