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We report the results for the production of highly charged atomic species (e. g. , Xe^20+, Kr^18+, O^5+, and C^4+) resulting from the interaction of intense laser fields (up to 10^15W/cm^2) with atomic and multicenter molecular clusters. The processes are also investigated using ultrafast pump-probe techniques, showing distinct beating patterns for the ionization structure in the molecular system. A comparison of our results with predictions of several different theoretical models provides strong support for the ionization ignition mechanism.
Snyder et al. (Mon,) studied this question.