Abstract
We investigate the multichannel dissociative ionization of \({\text {C}}_{2}{\text {H}}_{5}\)OH in intense laser fields by the photoelectron-photoion coincidence momentum imaging and identify separately the ionization and subsequent electronic excitation in \({\text {C}}_{2}{\text {H}}_{5}\)OH. From the energy correlation between a photoelectron and a fragment ion, we reveal the amount of the internal energy gained by \({\text {C}}_{2}{\text {H}}_{5}{\text {OH}}^{+}\) from the laser field varies depending on the respective ionization and electronic excitation pathways. It is found that \({\text {C}}_{2}{\text {H}}_{5}{\text {OH}}^{+}\) prepared in the electronic ground state associated with the moment of the photoelectron emission gains larger internal energy at the end of the laser pulse than that prepared in the electronically excited state at the moment of the photoelectron emission.
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Acknowledgments
Our study described in this chapter was supported in part by the JAEA special research project “Reaction control in intense laser fields”, by MEXT/JSPS KAKENHI (Grant numbers 14077205, 17750004, 19685003, and 23350013) and by the Matsuo Foundation.
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Itakura, R., Hosaka, K., Yokoyama, A., Ikuta, T., Kannari, F., Yamanouchi, K. (2015). Electron and Ion Coincidence Momentum Imaging of Multichannel Dissociative Ionization of Ethanol in Intense Laser Fields. In: Yamanouchi, K., Nam, C., Martin, P. (eds) Progress in Ultrafast Intense Laser Science XI. Springer Series in Chemical Physics(), vol 109. Springer, Cham. https://doi.org/10.1007/978-3-319-06731-5_2
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