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dc.contributor.advisor Hulet, Randall G.
dc.creatorMcAlexander, William Ian
dc.date.accessioned 2009-06-04T00:36:18Z
dc.date.available 2009-06-04T00:36:18Z
dc.date.issued 1995
dc.identifier.urihttps://hdl.handle.net/1911/13974
dc.description.abstract Spectroscopy of the high-lying vibrational levels of the $1\sp3\Sigma\sbsp{g}{+}$ and $1\sp1\Sigma\sbsp{u}{+}$ states of both $\rm\sp6Li\sb2$ and $\rm\sp7Li\sb2$ has been accomplished via photoassociation of ultracold atomic lithium confined in a magneto-optical trap. Both these molecular states correlate to $2S\sb{1/2}$ plus $2P\sb{1/2}$ free atomic states. The long range part of these molecular potentials depends on the 2P atomic radiative lifetime. Accurate models were constructed for both the $1\sp3\Sigma\sbsp{g}{+}$ and $1\sp1\Sigma\sbsp{u}{+}$ potentials. By fitting these models to the experimentally measured vibrational levels observed in $\rm\sp6Li\sb2$ and $\rm\sp7Li\sb2$, we have been able to extract a value for the 2P lifetime of lithium. Fitting to the absolute values of the data gives a value of 26.99 $\pm$ 0.16 ns whereas fitting to differences in the spectral features gives a value of 27.04 $\pm$ 0.18 ns. While both values agree with previous work, improvements made in the potential models would enable this analysis to resolve the current discrepancy between experiment and theory.
dc.format.extent 85 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectAtomic physics
dc.title Precise determination of the 2P radiative atomic lifetime of lithium using photoassociative spectroscopy
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation McAlexander, William Ian. "Precise determination of the 2P radiative atomic lifetime of lithium using photoassociative spectroscopy." (1995) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13974.


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