Topic: Pre-dissociation kinetics of hydrogen molecules

Speaker: Professor Mo Yuxiang

Department of Physics, Tsinghua University

Report time: May 15 (Wednesday) 14:00

Report location: 504, Life Science Building

Hosted by: Institute of Atomic and Molecular Physics

Abstract:

The electronic structure and dynamics of hydrogen molecules are one of the most important research contents in molecular physics, and the excited state spectra of hydrogen molecules have also been studied very carefully. However, the dissociation kinetics of hydrogen molecules, especially the photolysis kinetics of generating excited hydrogen atoms, are rarely studied, mainly due to the lack of research tools. Recently we have used and developed some new experimental tools, including: four-wave mixing, ion imaging, H-atom Rydberg tagging, delay time and Rydberg spectroscopy and other new technologies, to carry out the photolysis dynamics and spectra of hydrogen molecules. In-depth and meticulous research, some very interesting results have been obtained, such as the periodic oscillation of the H(2s)/H(2p) state branch ratio; the angle-dependent Fano line type, 2p1/2, 2p3/2 spin-orbit The resolved angular distribution of fragments and their branching ratios, and the H/D isotope effect in HD photolysis; these results have improved our understanding of molecular electronic structure and dynamics.