Abstract
We experimentally investigated dissociative double ionization of CO${}_{2}$ induced by intense femtosecond laser pulses. Three-dimensional momenta were precisely measured for correlated fragmental ions CO${}^{+}$ and O${}^{+}$. The dissociation dynamics of CO${}_{2}$${}^{2+}$ was theoretically simulated by using a Coulomb potential approximation. The ultrashort dissociation time (\ensuremath{\sim}400 fs) can well explain the observed anisotropic angular distribution of fragmental ions relative to the laser polarization.
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