University of Illinois Urbana-Champaign

State-to-state spectroscopy and dynamics of ions and neutrals by photoionization and photoelectron methods

Ng, Cheuk-Yiu

Content Files
TG01_Abstract.pdf
TG01_Presentation.pptx

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https://hdl.handle.net/2142/55845

Description

Title
State-to-state spectroscopy and dynamics of ions and neutrals by photoionization and photoelectron methods
Author(s)
Ng, Cheuk-Yiu
Issue Date
2014-06-17
Keyword(s)
Mini-symposium: Beyond the Mass-to-Charge Ratio: Spectroscopic Probes of the Structures of Ions
Date of Ingest
  • 2014-11-20T18:35:47Z
  • 2015-04-14T18:41:24Z
Abstract
Recent advances in high-resolution photoionization, photoelectron, and photodissociation studies based on single-photon vacuum ultraviolet (VUV) and two-color infrared (IR)-VUV, visible (VIS)-ultraviolet (UV), and VUV-VUV laser excitations are illustrated with selected examples. We show that VUV laser photoionization coupled with velocity-map-imaging (VMI)-threshold photoelectron (VMI-TPE) detection can achieve comparable energy resolutions, but higher detection sensitivities than those observed in VUV laser pulsed field ionization-photoelectron (PFI-PE) measurements. For molecules with known intermediate states, IR-VUV and VIS-UV excitation schemes are highly sensitive for rovibronically selected and resolved PFI-PE studies. The successful applications of the VUV-PFI-PE, VUV-VMI-TPE and VIS-UV-PFI-PE methods to state-resolved and state-to-state photoelectron studies of transient radicals and transitional metal-containing molecules are highlighted. The most recently established VUV-VUV pump-probe time-slice VMI-photoion method is shown to be promising for state-to-state photodissociation studies of small molecules relevant to planetary atmospheres and for the fundamental understanding of photodissociation dynamics.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
en
Permalink
http://hdl.handle.net/2142/55845
DOI
https://doi.org/10.15278/isms.2014.TG01
Copyright and License Information
Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

Owning Collections

Abstracts & Presentations - 2014 International Symposium on Molecular Spectroscopy PRIMARY