Laser-induced valence electron excitation in acetylene

Strong-field induced valence electron excitation is a common process in strong field interaction with atoms and molecules. In the case of polyatomic molecules, effects ionization from low-lying molecular orbitals nuclear dynamics during can play critical roles for excitation. this work, we investigate involved singly ionized acetylene laser using alignment dependence intensity dependence. Additionally, are identified difference kinetic energy release angular distribution laser-induced dissociation different pulse durations intensities. The clearly shows relative strength change two pathways measured momentum angle-resolved distributions.