We compare quantum mechanical and fully classical treatments of electron dynamics accompanying strong field double ionization. The major features seen in quantum mechanical simulations, including the double-ionization jets, are reproduced when using a classical ensemble of two-particle trajectories.
Panfili, R.; Eberly, J. H.; and Haan, Stanley L., "Comparing classical and quantum dynamics of strong-field double ionization" (2001). University Faculty Publications. 525.