Inelastic collisions in optically trapped ultracold metastable ytterbium

A. Yamaguchi, S. Uetake, D. Hashimoto, J. M. Doyle, Y. Takahashi

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39 Citations (Scopus)


We report measurement of inelastic loss in dense and cold metastable ytterbium (Yb[P23]). Use of an optical far-off-resonance trap enables us to trap atoms in all magnetic sublevels, removing m-changing collisional trap loss from the system. Trapped samples of Yb[P23] are produced at a density of 2×1013cm-3 and temperature of 2μK. We observe rapid two-body trap loss of Yb[P23] and measure the inelastic collision rate constant 1.0(3)×10-11cm3s-1. The existence of the fine-structure changing collisions between atoms in the P23 state is strongly suggested.

Original languageEnglish
Article number233002
JournalPhysical Review Letters
Issue number23
Publication statusPublished - Dec 2 2008
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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