High order harmonic generation(HHG)is an important nonlinear effect when atoms and molecules are irradiated by intense laser fields.They can be used to synthesize ultrashort pulses that allow one to o
When exposed to intense laser field,atoms and molecules can absorb many more photons than necessary for ionization and lead to a series of evenly spaced peaks in photoelectron kinetic energy spectra,w
The investigation of molecular fragmentation dynamics induced by photons,electrons,as well as heavy ions has been an active area of research over the last decades [1-5].Especially,Coulomb explosion of