Time-resolved photo electron spectroscopy of DNA base pairs and ultrafast X-ray absorption

by Dr Niklas Gador (Department of Chemical Physics, Lund University)

Thursday 29 Jan 2009, 09:15 → 10:00 Europe/Stockholm

FA32

The Photo chemistry of UV-excited DNA bases and base pairs shows dynamics on a femtosecond time scale and is here studied by time-resolved photo electron spectroscopy. A new photoelectron-photoion coincidence spectrometer was designed and built to study e.g. the Adenine- Thymine base pair in gas phase. Targeting ultrafast structural dynamics in liquid phase, the X-ray regime of the probe pulse is gaining interest, and can be used for studies of metal reaction center dynamics in e.g. photosynthesis complexes.