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Conference 11999 > Paper 11999-26
Paper 11999-26

Ultrafast x-ray probing of photoinduced dynamics in nucleobases

Abstract

Molecules selectively transform the energy of absorbed photons into other energetic forms like heat, chemical bonds, or transferred charges with high quantum efficiency. This conversion process often occurs under the breakdown of the Born-Oppenheimer approximation. Ultrafast x-ray pulses offer new possibilities to investigate the coupled motion of electrons and nuclei with site and element selectivity. We show different experimental examples for x-ray probing of photoexcited molecules. We use ultrafast Auger spectroscopy for local bond changes, x-ray absorption spectroscopy for detecting lone pair orbitals in the conversion, and x-ray photoelectron spectroscopy to deduce charge motion within the excited molecule.

Presenter

Markus Gühr
Univ. Potsdam (Germany)
Presenter/Author
Markus Gühr
Univ. Potsdam (Germany)