Optical pump X-ray probe experiments in Diamond Light Source using laser sources Gabriel Karras, Stuart Bartlett, Robin Owen, Mark Warren and Andrew Dent Diamond Light Source, UK Pump probe spectroscopy has a played a pivotal role in the development and the understanding of modernphysical chemistry. To name few examples, it has helped identifying the formation of transient species in the photocatalysis process and the impact of the oxidation of the excited states on proteins and nucleic acids and it has also been used to identify binding sites of light-switch complexes on DNA structures such as i-Motif. Performing similar measurements using Xray pulses as a probe, would provide much deeper understanding on the aforementioned processes as it will add elemental and structural information in the atomic level. In Diamond we have invested in the procurement of laser source which will allow such complementary experiments to be carried out. Results from the first experiments and the characteristics of the light source and its capabilities will be presented.
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