Journal ArticleDOI
Studies of the Jahn-Teller effect .II. The dynamical problem
TLDR
In this paper, the vibronic energy levels of a symmetrical nonlinear molecule in a spatially doubly degenerate electronic state which is split in first order by a doubly-degenerate vibrational mode are examined.Abstract:
This paper examines the vibronic energy levels of a symmetrical non-linear molecule in a spatially doubly degenerate electronic state which is split in first order by a doubly degenerate vibrational mode. The vibronic levels are classified by a quantum number, which in certain cases is formally related to the combined angular momentum of electronic and vibrational motion, and numerical values are obtained for the energies of these levels as functions of this quantum number and a dimensionless parameter measuring the magnitude of the electronic-vibrational coupling. It is shown that the selection rules for transitions from these vibronic levels to those of a non-degenerate electronic state allow changes in vibrational energy of any integral number of quanta, as though the Jahn-Teller effect were equivalent to a distortion which makes allowed vibrational transitions which would otherwise be forbidden. Numerical values are given for the oscillator strengths of vibronic absorption or emission bands involving transitions between a Jahn-Teller distorted state and an electronically non-degenerate state. It is found that in transitions from the latter to the former the vibrational structure of the electronic band exhibits two intensity maxima if the distortion is large.read more
Citations
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Journal Article
Multimode molecular dynamics beyond the Born-Oppenheimer approximation
TL;DR: Theorie des effets de couplage vibronique multimodes is described in this paper, where couplages mettant en jeu des modes and des etats degeneres.
Journal ArticleDOI
Intramolecular Radiationless Transitions
Mordechai Bixon,Joshua Jortner +1 more
TL;DR: In this paper, the authors considered a theory for intramolecular radiationless transitions in an isolated molecule and derived the validity criteria for the occurrence of an unimolecular radii-less transition and for exponential decay.
Journal ArticleDOI
Dynamical Jahn-Teller Effect in Paramagnetic Resonance Spectra: Orbital Reduction Factors and Partial Quenching of Spin-Orbit Interaction
TL;DR: In this paper, it was shown that the dynamical Jahn-Teller effect in a complex having orbital degeneracy may partially quench spin-orbit interaction, the orbital parts of the Zeeman and hyperfine interactions, and other orbital operators governing response to perturbations such as strain or applied electric fields.
References
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Book
Introduction to Quantum Mechanics
TL;DR: A new chapter on symmetries, new problems and examples, improved explanations, more numerical problems to be worked on a computer, new applications to solid state physics, and consolidated treatment of time-dependent potentials as discussed by the authors.
Journal ArticleDOI
Relaxation Processes and Inertial Effects II: Free Rotation in Space
TL;DR: In this article, the effect of inertia on the dielectric properties of identical noninteracting rigid dipoles with various types of fluctuation is extended to the case of free rotation in space.
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