# PHOTOELECTRON IMAGING FROM NANOSECONDS TO FEMTOSECONDS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/21406

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 Title: PHOTOELECTRON IMAGING FROM NANOSECONDS TO FEMTOSECONDS Creators: Parker, David H. Issue Date: 2004 Publisher: Ohio State University Abstract: Photoelectron imaging can reveal a wealth of information on the structural and dynamical properties of small molecules and their $ions^{a}$. Using nanosecond lasers we distinguish direct and autoionization pathways in transient and reactive atoms and molecular radicals such as Fe from a discharge source or S atoms from OCS photodissociation. With picosecond lasers the rapid change in molecular geometry as methyl iodide dissociates is revealed in the photoelectron image as rich vibrational structure of excited $CH_{3}I+$. Trends from these simple systems are used to help interpret the complex time-dependent photoelectron images measured in femtosecond pump-probe studies of the molecule tetrakis, an amino-substituted ethylene. This overview describes work done in Nijmegen, at the FORTH facility in Crete with T. Kitsopoulos, and at the SLIC facility in Saclay with B. Soep and coworkers. Description: $^{a}$D. H. Parker in Photoionization and Photodetachment'' C.Y. Ng, editor, Advanced Series in Physical Chemistry vol 10A, World Scientific (Singapore) 1999. Author Institution: Dept. of Molecular and Laser Physics, University of Nijmegen URI: http://hdl.handle.net/1811/21406 Other Identifiers: 2004-TE-01