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Complete photo-fragmentation of the deuterium molecule

机译:氘分子的完整光致碎裂

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All properties of molecules - from binding and excitation energies to their geometry - are determined by the highly correlated initial-state wavefunction of the electrons and nuclei. Details of these correlations can be revealed by studying the break-up of these systems into their constituents. The fragmentation might be initiated by the absorption of a single photon(1-6), by collision with a charged particle(7,8) or by exposure to a strong laser pulse(9,10): if the interaction causing the excitation is sufficiently understood, the fragmentation process can then be used as a tool to investigate the bound initial state(11,12). The interaction and resulting fragment motions therefore pose formidable challenges to quantum theory(13-15). Here we report the coincident measurement of the momenta of both nuclei and both electrons from the single-photon-induced fragmentation of the deuterium molecule. The results reveal that the correlated motion of the electrons is strongly dependent on the inter-nuclear separation in the molecular ground state at the instant of photon absorption.
机译:分子的所有特性-从键合和激发能到它们的几何形状-都由电子和原子核的高度相关的初始状态波函数决定。这些相关性的详细信息可以通过研究将这些系统分解为其组成部分来揭示。碎片的产生可能是由于单个光子(1-6)的吸收,与带电粒子的碰撞(7,8)或暴露于强激光脉冲(9,10)引起的:如果引起激发的相互作用是充分理解,碎片化过程可以用作研究结合的初始状态的工具(11,12)。因此,相互作用和由此产生的碎片运动对量子理论提出了巨大的挑战(13-15)。在这里,我们报告了从单光子诱导的氘分子碎裂中两个核和两个电子的动量的同时测量。结果表明,电子的相关运动在很大程度上取决于光子吸收瞬间分子基态中的核间分离。

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