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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >State-to-State Reactive Scattering via Real L~2 Wave Packet Propagation for Reduced Dimensionality AB + CD Reactions
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State-to-State Reactive Scattering via Real L~2 Wave Packet Propagation for Reduced Dimensionality AB + CD Reactions

机译:通过实L〜2波包传播进行的状态间反应散射,以降低尺寸AB + CD反应

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摘要

We present a computational method for the calculation of quantum state-to-state reactive probabilities for reduced dimensionality, three degree-of-freedom,AB + CD -A + BCD reactions. Our approach is based on the recently developed wave packet propagation method in real L2 eigenstates [Skokov, S.; Bowman, J. M. Phys, Chem. Chem. Phys. 2000,2,495]. Here we show how the real L2 approach can be used for the calculation of state-to-state probabilities. The "coordinate transfonnation probltm" is relatively easilysolv.ed in the L 2-eigenstate formulation because the eigenstaiesused for propagation r.re analytical functions of the, coordinates.. The method is tested for the H2 + CN .H +HCN reaction for zero total angular momentum, J, using a previous potential energy surface of Sun and Bowman", who reported reduced dimensionality, time- independent calculations of state-to-state reaction probabilities. New calculations for J > Oare presented using the adiabatic rotation approximation.ln this approximation the L2-eigenstates are obtained efficiently by expanding them in the basis of J = O eigenstates. Finally a test of J-shifting is done.
机译:我们提出了一种计算方法,用于计算降低维数,三自由度,AB + CD -A + BCD反应的量子状态间反应概率。我们的方法是基于最近开发的在真实L2本征态中的波包传播方法[Skokov,S .; Bowman,J.M.Phys,Chem。化学物理2000,2,495]。在这里,我们显示了真正的L2方法如何用于状态间概率的计算。在L 2本征态公式中相对容易解决“坐标转换问题”,因为本征用于传递坐标的解析函数。该方法针对H2 + CN .H + HCN反应为零进行了测试。总角动量J,使用Sun和Bowman以前的势能面”,他报告了维数减小,状态对状态的概率与时间无关的计算。使用绝热旋转近似法给出了J> Oare的新计算。通过在J = O本征态的基础上扩展它们,可以有效地获得L2本征态的近似值,最后进行了J位移的测试。

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