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We use electron- and ion spectroscopy in order to study and control thequantum processes that determine the fragmentation and rearrangementof molecules in the gas phase. We are using electron-multi-ioncoincidence spectroscopy to study the fragmentation processes ofmolecules after irradiation with light. We are using three very differentlight sources:
- Intense Laser radiation with 100 fs pulse length. Such strong opticalfields cause ionization and fragmentation of molecules due to multiphoton processes or field ionization.
- Soft x-ray synchrotron radiation for producing molecules with a verywell defined core excitation, that undergo ultrafast fragmentation.
- Intense VUV Free-Electron-Laser.
‘Selected Papers
- Experimental retrieval of target structure information from laser-inducedrescattered photoelectron momentum distributions. M. Okunishi, T. Morishita, G.Pruemper, K. Shimada, C. D. Lin, S. Watanabe, and K. Ueda, Phys. Rev. Lett., 100,143001 (4pp) (2008).
- Experimental evidence of interatomic Coulombic decay from the Auger final statesin argon dimmers. Y. Morishita, X.-J. Liu, N. Saito, T. Lischke, M. Kato, G. Pruemper,M. Oura, H. Yamaoka, J. Harries, Y. Tamenori, I.H. Suzuki, and K. Ueda, Phys. Rev.Lett. 96 243402 (4pp) (2006).
- Core excitation and de-excitation spectroscopies of free atoms and molecule. K.Ueda, J.Phys.Soc.Jpn. 75, 032001 (21pp) (invited review article) (2006).
- Molecular photodissociation studied by VUV and soft X-ray radiation. K. Ueda and J.H.D. Eland, J. Phys. B 38, S839-S859 (Einstein Special issue, invited paper) (2005).
- High resolution inner-shell spectroscopies of free atoms and molecules using soft X-ray beam lines at the third generation synchrotron radiation sources. K. Ueda, J.Phys. B 36, R1-R47 (invited review article) (2003).
‘ContactF
Kiyoshi Ueda
(TEL 022-217-5381,FAX 022-217 -5380 Email: ueda@tagen.tohoku.ac.jp)