Polyatomic molecules excited, collision induced intramolecular

Interest in radiationless transitions has increased slightly in the past year. Kommandeur has provided a review with an emphasis on gas-phase problems, whilst Heller and Brown have analysed the nature of non-radiative transitions above and below crossings between potential surfaces. Collision-induced intramolecular non-radiative transitions through vibronic coupling have been calculated for medium sized molecules. The relationship between radiationless transitions and i.r. multiphoton excitation in polyatomic molecules has been theoretically investigated also radiative and non-radiative... [Pg.3]

COLLISION-INDUCED INTRAMOLECULAR ENERGY TRANSFER IN ELECTRONICALLY EXCITED POLYATOMIC MOLECULES... [Pg.237]

The title of this chapter seems to promise a general discussion of the nature of collision-induced intramolecular energy transfer in electronically excited polyatomic molecules. If interpreted as just stated, the title promises more than can be delivered at this time. It is only recently that advances in experimental technique have permitted the study of the pathways of intramolecular energy redistribution following collision, and the few results now available were neither anticipated nor can they yet be fully accounted for by the available theories of collision-induced energy transfer. This chapter describes a preliminary synthesis of the limited experimental and theoretical information in hand and discusses some of its implications. It will be seen that more questions are raised than are answered. [Pg.237]

At present there are no data available for the temperature dependence of the collision-induced intramolecular vibrational relaxation of electronically excited polyatomic molecules. As part of a program of obtaining informa-... [Pg.263]

Collision Induced Intramolecular Energy Transfer in Electronically Excited Polyatomic Molecules... [Pg.728]

S.A. Rice, Collision-induced intramolecular energy transfer in electronically excited polyatomic molecules. Adv. Chem. Phys. 47, 237 (1981)... [Pg.722]