Strong-field photoionization/dissociation of vinyl bromide in near-infrared and ultraviolet femtosecond laser fields

Ionization of polyatomic molecules in strong femtosecond laser fields is a pivotal process that may induce a variety of highly nonlinear molecular physical phenomena. We performed an experimental study on photoionization and dissociation of vinyl bromide molecules in 800 nm or 400 nm femtosecond strong laser fields using a time-offlight mass spectrometer. The dependence of the ion yields on laser intensity and polarization was investigated, and the results are compared in different wavelength laser fields. The kinetic energy releases from Coulomb explosion of vinyl bromide, and the angular distributions of different fragment ions were obtained. The mechanism of strong-field ionization/dissociation of vinyl bromide in different laser fields is discussed based on the experimental

Automated summary

This study experimentally investigates the photoionization and dissociation process of vinyl bromide molecules in strong femtosecond laser fields. The ion yields' dependence on laser intensity and polarization is examined and compared between different wavelength laser fields. Information on the kinetic energy releases from Coulomb explosion and the angular distributions of different fragment ions is obtained. The mechanisms of strong-field ionization/dissociation of vinyl bromide in different laser fields are discussed based on the experimental findings.