Manifestations of femto- and picosecond features of the dynamics of photodissociation in molecular spectra

Structural features of photodissociation spectra of molecules are analyzed from the standpoint of possibilities of the selection of a concise description of mechanisms for the formation of the profile of an electron transition band. Comparative analysis of the following types of structures is carried out: Condon reflection structure, Airy-like structure determined by a small inclination of the potential function of a repulsive state, interference structure, structural singularity conditioned by the parallelism of potentials, structure determined by the presence of a potential barrier, and recursive structure. Methods for the identification of a type of a structure from overall indications and possibilities for the use of structural singularities in the determination of adiabatic potentials of molecules from experimental data are discussed.