Source: National Natural Science Foundation of China

Grant No: 11334009 

Project: Many-body correlation effects in atomic and molecular processes driven by ultrafast intense laser fields

Chief Specialist: Prof. Xiaojun Liu

Abstract: Many-body interaction and electron-electron correlation is one of the fundamental problems in physics. The interaction of atoms and molecules with ultrafast intense laser field provides a measure to study the electron correlation and the complex many-body dynamics. This project investigates the many-body dynamics of atoms and molecules in intense laser field by combing the ultrafast intense laser and the charged particle measurement technology. We experimentally measure the total yield and the differential momentum of the fragmented particles such as electron and ion and analyze their dependence on the laser parameters and the atomic and molecular structures. In the theoretical aspect, we will develop S-matrix theory, semiclassical model and numerical simulation method which take into account the many-body interaction. By comparing the experimental results with the theoretical models, the study aims to uncover the role of electron correlation, electron-nuclear correlation in strong field atomic and molecular processes on ultrafast femtosecond and even attosecond time scale.