强激光场与分子相互作用中的多电子效应，是进一步的认识深化和解决强场分子物理问题的关键之一，对于发展崭新的阿秒科学也是非常有意义的。新近发展的一些先进实验方法和精确理论计算为认识这一重要效应提供了新机遇。项目以强场分子物理中的多电子效应为研究重点，通过建立载波包络相位及剪裁超快光场的波形和相位实时测量方法、结合自由空间分子精确取向技术和荷电粒子动量符合成像方法的实验装置、适用于多电子问题含时的分子强场理论计算及模拟方法，系统研究强激光场与分子相互作用产生电离的电子动力学过程及其相关现象，旨在获取和深入理解分子强场电离相关的电子动力学和电离电子回撞动力学中多电子效应的物理图像，揭示超快强光场与分子相互作用中新物理机制和规律。项目研究将有力的促进强激光场与分子相互作用的认识，为超快分子结构测定、分子轨道形貌成像等具有前瞻性的强场分子物理应用提供急需的支持。

Multielectron effects in the interaction between strong-laser fields and molecules are one of the key point for deeply understanding and solving problems in strong-field molecular physics, and also play an important role in new attosecond science. The advanced experimental techniques and accurate theoretical calculation methods that are developed recently have opened a brand-new opportunity for further insight investigating such important effect. The present proposal will focus on the multielectron effect in strong field molecular physics. We will develop robust experimental techniques and theoretical methods, including the CEP stabilization and the phase/waveform modulation technique for real-time measurements, the combined technique for accurate orientation of molecules in free-space and coincident measurement of 3-dimension momentum of charged particles, and the time-dependent calculation and simulation methods for dealing with the multielectron effects in strong-field molecular physics. With the combination of these techniques and methods, we will carry out complete studies on various molecular multielectron effects in the dynamics both for ionizing electrons and rescattering electrons that are driven by the ultra-short pulsed strong laser fields. The purpose of the proposal is to achieve more knowledge on the molecular multielectron effects, thus to reveal the underlying mechanism and physical properties which control such important effect in strong-field molecular physics. The aims of the proposed studies is to develop the elaborate techniques and methods, to promote our understanding on the underlying physics, for multielectron effect in strong laser interaction with molecules, and to provide essential supports that can be utilized in the prospective research fields such as real-time measurement of molecular structure, ultrafast tomography of molecular orbitals, and so on.