SEARCH Articles Figures Tables Intramolecular vibrational Intramolecular vibrational energy relaxation Intramolecular vibrational energy relaxation theory Intramolecular vibrational redistribution relaxation time Intramolecular vibrational relaxation molecular model Intramolecular vibrations Radiationless processes intramolecular vibrational relaxation Relaxation intramolecular Vibrational relaxation Vibrational relaxational