Sequential Ionization of D_2 Molecules in an Ultra-short

X. M. Tong, C. D. Lin
(Physics Department, Kansas State University, Manhattan, KS 66506)

The released kinetic energy spectra of D^+ is simulated for the sequential double ionization of D_2 molecules in an ultra-short intense laser field. D_2 is first ionized at its equilibrium distance, followed later by the subsequent further ionization of D_2^+ at larger intenuclear separations. By comparing our simulated D^+ energy spectra with the measured one, we can tell the time duration between the two ionizations to sub-femtosecond accuracy and internuclear separation to sub-Å\ accuracy.

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division,
Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy.

Submitted to DAMOP, May 2004 in Tucson, AZ.

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