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Report No.

Momentum correlation between a photoelectron and a fragment ion ejected from ethanol in femtosecond intense laser fields

Itakura, Ryuji; Hosaka, Koichi*; Yamanouchi, Kaoru*; Yokoyama, Atsushi

In order to clarify the mechanism of dissociative ionization of ethanol in intense laser fields, the correlation maps P(E$$_{elec}$$, E$$_{ion}$$), where E$$_{elec}$$ and E$$_{ion}$$ denote kinetic energy of an electron and a fragment ion, respectively, are obtained by photoelectron-photoion coincidence momentum imaging. The kinetic energy distribution of the ions at a specific electron kinetic energy of electrons E$$_{elec}$$ are reproduced by an exponential curve of exp(-E$$_{ion}$$/E$$_{0}$$), where E$$_{0}$$ is a variable parameter, suggesting that the intramolecular energy redistribution proceeds efficiently in the course of the dissociation process after the ionization.



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