Theory of multiphoton dissociation of polyatomic molecules under the action of an infrared laser field

<正>Under the action of an intense infrared laser field,polyatomic molecules will undergoinstantaneous dissociation which is shown by experiment to be not a thermal one but aphoto-dissociation induced by multiphoton absorption.We have worked out a theoryabout this phenomenon.In the physical model suggested here the multiphoton photo-dissociation process may be represented in the form of uni-molecular reaction i.e.A(molecule)+W(many photons)→A*(excited molecule)→B+C(dis-