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Itakura, Ryuji
Kyo Koshiba Kagaku No Tenkai CSJ Karento Rebyu, p.52 - 57, 2015/03
In dissociative ionization of molecules induced by intense laser fields, a variety of reaction channels appear resulting from the combination of electron emission, electron excitation in molecules and so on. It is important to separate (1) photoelectron emission and (2) subsequent electronic excitation in molecules. We review the recent experimental results obtained by the photoelectron-photoion coincidence method.
Fukahori, Shinichi*; Nakano, Motoyoshi; Yamanouchi, Kaoru*; Itakura, Ryuji
no journal, ,
We investigate the mechanism of the electronic excitation of singly charged methanol cation in dissociative ionization of methanol cation in intense laser fields based on photoelectron-photoion coincidence momentum imaging. From three independent experimental results such as (1) channel specific photoelectron spectra, (2) energy correlation of photoelectrons and fragment ions and (3) angular correlation of electron emission and fragment recoil, two types of ionization and electronic excitation pathways are revealed.
Itakura, Ryuji
no journal, ,
Photoelectron-photoion coincidence momentum imaging apparatus has been developed by our group for investigating dissociative ionization of polyatomic molecules in intense laser fields. In this talk, the experimental results on methanol and ethanol will be introduced. It has been demonstrated that the three dimensional momentum correlation between photoelectrons and photoions allows us to reveal the pathways in ionization and electronic excitation of molecules in intense laser fields.