Study of the v1,v3 bands of 120SnH4: Part II--semiclassical qualitative analysis: critical phenomena and diabolic points

V. M. Krivtsun; D. A. Sadovskii; B. I. Zhilinskii

doi:10.1117/12.58668

1 April 1992 Study of the v1,v3 bands of ¹²⁰SnH₄: Part II--semiclassical qualitative analysis: critical phenomena and diabolic points

V. M. Krivtsun, D. A. Sadovskii, B. I. Zhilinskii

Author Affiliations +

Proceedings Volume 1724, Tunable Diode Laser Applications; (1992) https://doi.org/10.1117/12.58668
Event: Tunable Diode Laser Applications, 1993, Moscow, Russian Federation

Abstract

The qualitative modifications of the rovibrational energy-level structure under rotational excitation are studied for the (nu) ₁, (nu) ₃ bands of ¹²⁰SnH₄. Two types of qualitative changes are shown to exist: the critical phenomena corresponding to the modification of the cluster structure and the so-called diabolic points associated with the redistribution of energy levels between different branches as the rotational quantum number increases. A simple model interpretation of energy-level redistribution is given to show that such a phenomenon is typical for tetrahedral molecules.

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V. M. Krivtsun, D. A. Sadovskii, and B. I. Zhilinskii "Study of the v1,v3 bands of ¹²⁰SnH₄: Part II--semiclassical qualitative analysis: critical phenomena and diabolic points", Proc. SPIE 1724, Tunable Diode Laser Applications, (1 April 1992); https://doi.org/10.1117/12.58668

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