Determination of the Nandash;Kr interaction potential in theXSgr; andAPgr; state by laser spectroscopy

摘要

We have extended our previous laser spectroscopic investigation of theAPgr;ndash;XSgr; transition of the van der Waals molecule NaKr84. Our experimental data consist now of about 1300 absorption lines and of the spectral intensity distribution of the fluorescence light. Spectroscopic parameters have been derived for the vibrational states 0,...,2 of theXSgr; state and 7,...,14 of theAPgr; state. The interatomic potentials of theXSgr; and theAPgr; states have been determined in a fully quantumhyphen;mechanical approach using analytical HFD or Tangndash;Toennies functions. For the equilibrium distance and the well depth we obtain 4.918(4) Aring;, 68.4(5) cmminus;1forXSgr; and 3.03(4) Aring;, 3.05(4) Aring; and 795(25) cmminus;1, 760(20) cmminus;1forAPgr;1/2andAPgr;3/2, respectively.