ICD in liquid water and in aqueous solution

• Applicant: Dr. Bernd Jürgen Winter
• Subject Area: Physical Chemistry of Molecules, Liquids and Interfaces, Biophysical Chemistry ; Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: from 2012 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 203306641

This project is focussed on the detection and characterization of ICD in aqueous solution. To this end we will use electron spectroscopy of a liquid microjet excited by synchrotron radiation, a technique which has been pioneered within this group. First results from liquid samples are indicating that direct transitions into delocalized two-hole states do take place in a liquid environment, and can be very effective. Unlike in some other projects within this Research Unit, in liquids and solvents the non-local decay amplitudes responsible for ICD have been addressed in the high-energetic decay of true core levels. Inner valence ICD is yet unproven in liquids. Demonstration of the latter is another goal of this project, and will be carried out in collaboration with the Hergenhahn group. Our work is planned to establish the dependence of ICD spectral shapes on solvent structure, which we see as an important future application of this process. This work will be done in close cooperation with theoreticians of the Dreuw group.

• DFG Programme: Research Units
• Subproject of: FOR 1789: Intermolecular and Interatomic Coulombic Decay