标题： 成像氢分子相关双电子波函数的平方 显示英文标题

标题： Imaging the square of the correlated two-electron wave function of a hydrogen molecule

摘要： 今天的成像分子工具箱已经非常完备。 一些技术可以可视化几何结构，另一些则可以可视化电子密度或电子轨道。 分子是多体系统，其组分之间的相关性至关重要，一个电子的空间和动量分布取决于其他电子和原子核的分布。 到目前为止，这些相关性尚未被成像技术直接观察到。 在这里，我们实现了一种成像方案，通过高能光解后反应碎片的符合检测来可视化电子之间的相关性。 利用这种技术，我们研究了H2的双电子波函数，在该波函数中，超越平均场水平的电子-电子相关性十分显著。 我们可视化了波函数与核间距离的依赖关系。 高能光电子被证明是分子成像的强大工具。 我们的研究为未来在自由电子激光器和基于激光的X射线源上的时间分辨相关成像铺平了道路。 显示英文摘要

摘要： The toolbox for imaging molecules is well-equipped today. Some techniques visualize the geometrical structure, others the electron density or electron orbitals. Molecules are many-body systems for which the correlation between the constituents is decisive and the spatial and the momentum distribution of one electron depends on those of the other electrons and the nuclei. Such correlations have escaped direct observation by imaging techniques so far. Here, we implement an imaging scheme which visualizes correlations between electrons by coincident detection of the reaction fragments after high energy photofragmentation. With this technique, we examine the H2 two-electron wave function in which electron-electron correlation beyond the mean-field level is prominent. We visualize the dependence of the wave function on the internuclear distance. High energy photoelectrons are shown to be a powerful tool for molecular imaging. Our study paves the way for future time resolved correlation imaging at FELs and laser based X-ray sources.