Abstract
Numerical solutions of the time-dependent Schroedinger equation of the two molecules H 2 + and H 2 allow for nonperturbative calculations of ionization rates in short intense laser pulses (τ < 1 ps, I ≃ 10 14 W/cm 2). It is shown that the coherent superposition of two pulses of frequency ω and 2ω results in optimal control of the ionization process at critical internuclear distances R c where charge resonance enhanced ionization (CREI) occurs. The implications of CREI are discussed for laser control of ionization in mass spectrometry.
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