Leeds

Chemical Physics Group

Project leader: Prof. J Benjamin C Whitaker B.J.Whitaker@leeds.ac.uk

PICNIC research assistant: André Eppink

Imaging and Coherent Control Group members: Dr. Anjan Barman, Nicholas Form and Ian Wilkinson

The Chemical Physics group operates within the School of Chemistry and there are strong links, often involving jointly supervised research students or research contracts, with other research groupings with the School, particularly reactions and kinetics, atmospheric chemistry, combustion chemistry and self-organising molecular systems (SOMS). The work within the group is strongly multidisciplinary and involves many aspects of chemistry (including synthesis) and molecular physics. Work within the group has included studying radiationless transitions and vibrational relaxation in molecules in the gas phase, electron transfer in jet cooled clusters, real time measurements of rotational motion of molecules in the gas phase by picosecond multiphoton ionisation and femtosecond TRPEI, picosecond time-resolved holographic imaging in polyacetylene films, degenerate four wave mixing in the gas phase and solution, primary events in the antenna and reaction centres of Photosystem I of photosynthetic organisms studied by femtosecond transient absorption spectroscopy and by exciton coupling calculations and ab-initio methods, electron-transfer in linked donor-acceptor molecules, barrierless reactions in triphenyl methanes by fluorescence up-conversion.

Wavepacket motion observed in the photodissociation of NO₂ by photoion imaging

Photoelectron images from NO. Top left: 266 nm excitation. Top right: 400 nm excitation. Bottom: Both 266 and 400 nm excitation at zero time delay.

Photoelectron images from pryrazine for excitation at 324 nm followed by a delayed probe at 197 nm at the times shown. The top row are the raw photoelectron images. The bottom row are slices through the photoelectron distribution obtained by an Abel transform of the raw data.

For more information on the research of the Imaging and Coherent Control Group click on the link below.

Imaging and Coherent Control Group