Vibrational autoionization in polyatomic molecules
▪ Abstract The vibrationally autoionizing Rydberg states of small polyatomic molecules provide a fascinating laboratory in which to study fundamental nonadiabatic processes. In this review, recent results on the vibrational mode dependence of vibrational autoionization are discussed. In general, autoionization rates depend strongly on the character of the normal mode driving the process and on the electronic character of the Rydberg electron. Although quantitative calculations based on multichannel quantum defect theory are available for some polyatomic molecules, including H3, only qualitative information exists for most molecules. This review shows how qualitative information, such as Walsh diagrams along different normal coordinates of the molecule, can provide insight into the vibrational autoionization rates.
The invention relates to an effect on keratin-containing fibers, in particular human hair, oxidatively acting agent containing in addition at least one oxidizing agent, a combination of active ingredients (A) a selected cationic polymer, (b) at least one mono- or di- (C (C) at least one quaternary ammonium compound which carries at least a selected group at the quaternized nitrogen atom, and a method for reshaping keratin fibers, in which this means is applied, and the use of this agent for fixing in the course of a hair forming. The transformation is improved by this means and that the fiber gets an excellent care and structural preservation.