Bound and quasibound states of alkali–rare gas molecules

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Abstract
Numerical calculations of bound and quasi bound states of alkali–rare gas van derm Wails molecules are presented. Computational precautions which must be taken when solving for high‐lying bound states and also for quasi bound states are outlined. We present calculations for Kr using several potentials to illustrate the effects of different potential shapes on the number of states. The calculated lifetimes of quasi bound levels are shown to vary over such a wide range that some, but not all, of the quasi bound molecules will behave like bound molecules in most conceivable physical situations. Our results verify the accuracy of analytic methods proposed by Mahan and Lapps for estimating the number of bound states in Leonard‐Jones potentials.
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