Attosecond coupled electron-nuclear dynamics of H$$_2$$ molecule under intense laser fields

Dissociative ionization of the H2 molecule under a strong elliptically polarized laser field: carrier-envelope phase and orientation effect

“…The model has been recently applied to study the double ionization of the H 2 molecule under the influence of an ultrashort elliptically polarized laser pulse with the same laser parameters as used in the current study. 43 The simulated results were compared with an experimental study. 51 Suffice to say that the KER spectra of the double ionization channel, correlated photoelectron energy spectrum, position of the nuclear wavepacket, etc.…”

“…The auxiliary potentials were first introduced by Kirschbaum and Wilets 40,41 and later, further developments were carried out by Cohen. 42 The model has been used extensively to study laser-driven atomic and molecular processes, 38,43–47 as well as atom–ion collision processes. 48…”

“…The detailed procedure for sampling the initial conditions can be found elsewhere. 43 Finally, the probabilities of the different channels are calculated bywhere n j is the number of trajectories in a particular channel with n tot being the total number of trajectories.…”

“…The auxiliary potentials were first introduced by Kirschbaum and Wilets 40,41 and later, further developments were carried out by Cohen. 42 The model has been used extensively to study laser-driven atomic and molecular processes, 38,[43][44][45][46][47] as well as atom-ion collision processes. 48 The field-free Hamiltonian of the H 2 molecule in the quasiclassical model is given by eqn (1) (atomic units are used throughout unless stated otherwise):…”

“…The time evolution of the field-free energy of the molecule has been reported in our previous article. 43 Finally, an ensemble of B10 5 molecules was generated and, thereafter, evolved in the presence of the laser field. The detailed procedure for sampling the initial conditions can be found elsewhere.…”