title: Spectroscopic determination of the s-wave scattering lengths of 86Sr and 88Sr.
abstract: We report the use of photoassociative spectroscopy to determine the ground-state s-wave scattering lengths for the main bosonic isotopes of strontium, 86Sr and 88Sr. Photoassociative transitions are driven with a laser red detuned by up to 1400 GHz from the 1S0-1P1 atomic resonance at 461 nm. A minimum in the transition amplitude for 86Sr at -494 +/- 5 GHz allows us to determine the scattering lengths 610a0 < a86 < 2300a0 for 86Sr and a much smaller value of -1a0 < a88 < 13a0 for 88Sr.
authors.affiliation: Department of Physics and Astronomy, Rice University, Houston, Texas 77251, USA.
authors.forename: P G
authors.initials: PG
authors.lastname: Mickelson
authors.forename: Y N
authors.initials: YN
authors.lastname: Martinez
authors.forename: A D
authors.initials: AD
authors.lastname: Saenz
authors.forename: S B
authors.initials: SB
authors.lastname: Nagel
authors.forename: Y C
authors.initials: YC
authors.lastname: Chen
authors.forename: T C
authors.initials: TC
authors.lastname: Killian
authors.forename: P
authors.initials: P
authors.lastname: Pellegrini
authors.forename: R
authors.initials: R
authors.lastname: Côté