Project supported by the National Key Program for S&T Research and Development(Grant No.2019YFA0307700);the National Natural Science Foundation of China(Grant Nos.12174148,11874179,12074144,and 12074146)。
Rydberg state excitation(RSE) is a highly non-linear physical phenomenon that is induced by the ionization of atoms or molecules in strong femtosecond laser fields. Here we observe that both parent and fragments(S, C,...