间接光致碎裂反应中强场效应的识别
Identifying Strong-Field Effects in Indirect Photofragmentation Reactions
摘要：
探索由光-物质相互作用引起的分子破裂过程具有重要的理论意义和实际意义。然而，它仍然是一个挑战，以阐明在强场制度，反应物的电位显着修改的潜在反应机制。在这里，我们进行了理论分析结合随时间变化的波包计算，以显示如何强大的超快激光场影响的光碎片产品。作为一个例子，我们研究的光化学反应，打破了分子碘化钠成中性原子钠和我，这是由于固有的非绝热耦合间接形成的逐步方式通过反应中间体碘化钠。通过分析碎片分布的角度依赖性，我们能够确定反应中间体碘化钠从弱到强场诱导的非绝热制度。此外，可以从瞬态光碎片动量分布的量子干涉图案中提取NaI的能级。
英文摘要：
Exploring molecular breakup processes induced by light-matter interactions has both fundamental and practical implications. However, it remains a challenge to elucidate the underlying reaction mechanism in the strong field regime, where the potentials of the reactant are modified dramatically. Here, we perform a theoretical analysis combined with a time-dependent wavepacket calculation to show how a strong ultrafast laser field affects the photofragment products. As an example, we examine the photochemical reaction of breaking up the molecule NaI into the neutral atoms Na and I, which due to inherent nonadiabatic couplings is indirectly formed in a stepwise fashion via the reaction intermediate NaI. By analyzing the angular dependencies of fragment distributions, we are able to identify the reaction intermediate NaI from the weak to the strong field-induced nonadiabatic regimes. Furthermore, the energy levels of NaI can be extracted from the quantum interference patterns of the transient photofragment momentum distribution.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
