Abstract
Strong-field triple ionization of atoms is studied by performing classical-trajectory Monte Carlo simulations. The momentum distributions of three electrons are visualized via Dalitz plots, exhibiting clear electronic correlations. Separated traces of various nonsequential paths are identified in these ternary spectra, including channels with multiple recollisions. It is proposed that Dalitz plots can be used as a valuable tool to study correlated electron dynamics in strong fields, in particular, as a method to retrieve from experimental data relative roles of various channels of nonsequential ionization such as direct ionization, recollision-induced excitation with subsequent ionization, or a multirecollison.
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