MAXIMA IN POTENTIAL CURVES OF $Cs_{2}$ MOLECULES
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Date
1978
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Ohio State University
Abstract
A discussion is provided for the explanation of the five salellite bands observed in the very for wings of the self-broadened D1 and D2 cesium resonance lines. It seems that the Van der Waals type interaction, avoided crossings and exchange interaction contribute to a bending downwards of initially repulsive resonance interaction curves $2_{g}, 1_{g}, 1_{u}, 0_{g}^{-}$ and $0_{g-}^{+}$. This results in the formation of the five maxima, which correspond to the five observed satellites in the far quasistatic wings. One of the maxima is identified as a hump in the $B^{1}\Pi_{u}$ (or $1_{u}$) potential curve with the relevant height above $^{2}P_{3/2} + ^{2}S_{1/2}$ level of about $250\, cm^{-1}$, which well agrees with the height of about $254\, cm^{-1}$ obtained by the extrapolation procedure from the $x^{1}\Sigma_{g}^{+} - B^{1}\Pi_{u}$ bands of the $Cs_{2}$ molecule by Kusch and Hessel. Possible implications of the present model Lo other alkali dimers will be discussed.
Description
Goran Pichler is a JILA visiting fellow 1977-1978. Permanent address: Institute of Physics, Zagreb, Yugoslavia.""
Author Institution: Joint Institute for Laboratory Astrophysics; Institute of Physics; Institute of Physics, Instit\'ut f\'ur Experimentalphysik der Universit\'at Kiel
Author Institution: Joint Institute for Laboratory Astrophysics; Institute of Physics; Institute of Physics, Instit\'ut f\'ur Experimentalphysik der Universit\'at Kiel