# OBSERVATION OF HIGH LYING LEVELS OF THE $I_{g} - 1^{1}\Pi_{g}$ STATE OF $K_{2}$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/19714

Files Size Format View
2000-RA-04.jpg 121.5Kb JPEG image

 dc.creator Ross, A. J. en_US dc.creator Martin, F. en_US dc.creator Russier, I. en_US dc.creator Chen, H. M. en_US dc.creator Pichler, Marin en_US dc.creator Wang, H. en_US dc.creator Stwalley, W. C. en_US dc.date.accessioned 2006-06-15T19:57:20Z dc.date.available 2006-06-15T19:57:20Z dc.date.issued 2000 en_US dc.identifier 2000-RA-04 en_US dc.identifier.uri http://hdl.handle.net/1811/19714 dc.description Author Institution: Laboratoire de Spectrom\'{e}trie Ionique et Mol\'{e}culaire (UMR 5579 CNRS), B\^{a}timent 205,, Universit\'{e} Lyon I; Department of Physics, University of Connecticut en_US dc.description.abstract Very high-lying vibrational levels $87 \leq v^{\prime\prime} \leq 138$ of the $1_{g-1} ^{1}\Pi_{g}$ electronic state of $K_{2}$ have been observed in a photoassociation experiment performed in Connecticut, using ionization detection. Photoassociation of ultracold potassium atoms furnishes accurate binding energies for $J \leq 4$ in these levels. These binding energies have been treated with laser induced fluorescence data covering the levels $0\leq v^{\prime\prime}\leq 105$ at high J (infrared $C^{1}\Pi_{u} \rightarrow 1 ^{1}\Pi_{g}$ transitions recorded by Fourier transform spectrometry) to construct an accurate potential curve for this electronic state. Because several vibrational levels were observed both in photoassociation and in fluorescence, an experimental dissociation energy can be deduced from the sum of binding energies (measured in photoassociation) and vibrational energies established with respect to the potential minimum (from fluorescence data), giving $D_{e} = 1230.297 \pm 0.002 cm^{-1}$. Applying asymptotic models for the interactions between K(4s)+K(4p) atoms to the molecular potential energy curve, a slightly lower value, $1230.292 \pm 0.002 cm^{-1}$ is obtained. This is considered to be the best available value for the dissociation energy of the $1 ^{1}\Pi_{g}$ electronic state into $K(4s)+K(4p)^{2}P_{3/2}$ atoms. en_US dc.format.extent 124447 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title OBSERVATION OF HIGH LYING LEVELS OF THE $I_{g} - 1^{1}\Pi_{g}$ STATE OF $K_{2}$ en_US dc.type article en_US