单分子反应动力学中的模式特异性问题

Laser Chemistry Pub Date : 1900-01-01 DOI:10.1155/LC.2.243

W. Miller

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引用次数: 6

摘要

考虑了特定状态激光激发后的单分子分解。如果单分子反应的过渡态具有几何对称性，则表明这可以导致衰变速率的模式特异性(即，具有基本相同的总能量和角动量的不同状态以显着不同的速率反应)。这说明了两个耦合振荡器(Henon-Heiles势)的模型问题，也说明了甲醛的单分子解离，H2CO→H2

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Question of mode-specificity in unimolecular reaction dynamics

Unimolecular decomposition following state-specific laser excitation is considered. If the transition state for the unimolecular reaction possesses any geometrical symmetry, then it is shown that this can lead to mode-specificity in the decay rates (i.e., different states with essentially the same total energy and angular momentum react at significantly different rates). This is illustrated for a model problem of two coupled oscillators (the Henon–Heiles potential) and also for the unimolecular dissociation of formaldehyde, H2CO→H2

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Laser Chemistry

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