HIGH RESOLUTION PHOTOELECTRON SPECTROSCOPY OF VIBRATIONALLY EXCITED ANIONS

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https://hdl.handle.net/2142/122530

Title: HIGH RESOLUTION PHOTOELECTRON SPECTROSCOPY OF VIBRATIONALLY EXCITED ANIONS
Author(s): Neumark, Daniel
Issue Date: 2023-06-19
Keyword(s): Plenary
Abstract: The method of slow electron velocity-map imaging of cryogenically cooled anions (cryo-SEVI) is a variant of anion photoelectron spectroscopy with a resolution as high as 1-2 cm−¹. It has proved invaluable in obtaining well-resolved photoelectron spectra of molecular anions, bare and complexed metal oxide clusters, and anionic precursors to transition states for bimolecular and unimolecular reactions. However, cryo-SEVI is subject to the same selection rules that govern photoelectron spectroscopy, and thus yields frequencies for only a small set of vibrational modes of the neutral species created by photodetachment. We have recently incorporated a tunable infrared laser into our experiment with the goal of vibrationally pre-exciting the anions prior to photodetachment. Results on diatomic and polyatomic anions will be presented that illustrate the capabilities and complexities of this new type of spectrscopy, IR cryo-SEVI.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: Text
Language: eng
Handle URL: https://hdl.handle.net/2142/122530
DOI: https://doi.org/10.15278/isms.2023.7005