抄録
A systematic approach to the vibronic problem of bound polaron is proposed taking advantage of spherical symmetry of the system. The interaction modes of LO phonon classified according to the angular momentum quantum number are introduced and the Hamiltonian is rewritten in the form which is manifestly invariant under rotation. The theory is applied to the analysis of the transient absorption spectra due to the transition from the relaxed excited state to higher excited states of the F-center in alkali halides. A good fit between the theoretical prediction and the experiment is obtained and the final states of the transition are assigned to be 3p state and its phonon side bands perturbed through vibronic interactions.
