dc.contributor.advisor Hulet, Randall G. Abraham, Eric Roy I. 2009-06-04T00:14:03Z 2009-06-04T00:14:03Z 1996 https://hdl.handle.net/1911/16990 The spectra of the high-lying vibrational levels of the $A\sp1\Sigma\sbsp{u}{+}$ and $1\sp3\Sigma\sbsp{g}{+}$ singly excited states of both $\sp6\rm Li\sb2$ and $\sp7\rm Li\sb2$ are obtained via photoassociation of colliding ultracold atoms confined in a magneto-optical trap. The least bound state of the $a\sp3\Sigma\sbsp{u}{+}$ ground state potential, obtained by two-photon photoassociative spectroscopy, is also presented for both $\sp7\rm Li\sb2$ and $\sp6\rm Li\sb2$. The vibrational levels have resolved hyperfine structure, whose relative energy splittings and transition strengths are accurately modeled. The photoassociative spectra are used to precisely determine both the singlet and triplet s-wave scattering lengths for both isotopes, which are important parameters in systems designed to observe quantum degenerate effects and Bose-Einstein condensation. 213 p. application/pdf eng Atomic physicsMolecular physicsPhysical chemistry Photoassociative spectroscopy of collisions between ultracold lithium atoms Thesis Text Chemistry Natural Sciences Rice University Doctoral Doctor of Philosophy Abraham, Eric Roy I.. "Photoassociative spectroscopy of collisions between ultracold lithium atoms." (1996) Diss., Rice University. https://hdl.handle.net/1911/16990.
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