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Using Diffusion Monte Carlo to Evaluate the Initial Conditions for classical Studies of the Photodissociation Dynamics of HCl Dimer

机译:使用扩散蒙特卡洛评估HCl二聚体光解离动力学经典研究的初始条件

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摘要

An approach for evaluating the initial conditions for classical studies of the photodissociation dynamics of molecular clusters is described. This approach is based on an approximate separation of the momentum and coordinate space probability distributions, evaluated using a wave function that is obtained from a Diffusion Monte Carlo simulation. Using the initial conditions that are generated by this approach, the photodissociation dynamics of HCl dimer is studied. Excellent agreement between the calculated and experimental angular momentum and vibrational energy distributions for the remaining HCl molecule and the kinetic energy distribution of the dissociated hydrogen atom are obtained. The kinetic energy distribution for the chlorine atom and angular distributions of the remaining hydrogen and chlorine atoms are also obtained and dynamical information contained in these distributions is discussed.
机译:描述了评估分子簇光解离动力学经典研究初始条件的方法。此方法基于动量和坐标空间概率分布的近似分离,并使用从扩散蒙特卡洛模拟获得的波动函数进行评估。使用该方法生成的初始条件,研究了HCl二聚体的光解离动力学。对于剩余的HCl分子,在计算出的角动量和实验角动量与振动能分布与离解的氢原子的动能分布之间取得了极好的一致性。还获得了氯原子的动能分布以及剩余的氢和氯原子的角分布,并讨论了包含在这些分布中的动力学信息。

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