Affiliation:
1. School of Information Engineering, Yancheng Institute of Technology, Yancheng 224051, China
2. State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
Abstract
The dissociative ionization of molecular IBr in a near-infrared femtosecond laser field was investigated through the utilization of the DC-sliced ion imaging technique. Two pathways, denoted as (1, 0)a and (1, 0)b, were observed in the dissociation process of IBr+ into an I+ ion and Br atom. The distinct angular distributions observed in these pathways were found to be a result of the removal of electrons from different molecular orbitals. Specifically, in pathway (1, 0)a, the electron was stripped from HOMO and HOMO-1, while in pathway (1, 0)b, the electron was removed from HOMO-2. The ultrafast dynamical processes of molecules influenced by intense femtosecond laser fields were investigated through an analysis of the angular distribution characteristics of fragment ions in conjunction with the spatial properties of molecular orbitals.
Funder
The Scientific Research Project for the Introduction of Talent of Yancheng Institute of Technology
The Natural Science Foundation of the Jiangsu Higher Education Institutions of China