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Nonadiabatic photodissociation dynamics in (Hl)2 induced by intracluster collisions

机译:团簇内碰撞在(Hl)2中产生非绝热光解动力学

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The sequential photodissociation dynamics of (HI)2 is studied by means of a nonadiabatic wave packet treatment starting from the I*-HI complex.The model reproduces the main experimental findings for photolysis with 266 nm radiation.The results confirm that some of the H atoms dissociated from the I*-HI complex deactivate the I* atom through a H/I* intracluster collision which induces an I*->I electronically nonadiabatic transition.As a consequence,these H fragments become very fast by acquiring nearly all the I* excitation energy,equivalent to the I*/I spin-orbit splitting.A most interesting result is the high production of bound I2 fragments in highly excited rovibrational states in the photolysis,indicating that the H dissociation is mainly direct.
机译:通过从I * -HI络合物开始的非绝热波包处理研究了(HI)2的顺序光解动力学,该模型重现了266 nm辐射光解的主要实验结果,结果证实了一些H从I * -HI络合物中解离的原子通过H / I *团簇内碰撞使I *原子失活,碰撞引起I *-> I电子非绝热跃迁。结果,这些H片段几乎通过获取所有I *激发能,相当于I * / I自旋轨道分裂。最有趣的结果是在光解过程中以高激发旋转振动态高结合I2片段的产生,表明H离解主要是直接的。

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