LASER SPECTROSCOPY OF TRAPPED IONS: A TOOL FOR MASS SPECTROMETRY.
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Date
2003
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
We report the study of the visible absorption spectroscopy of non-volatile cations trapped in the gas phase in a RF Paul trap. Absorption spectra of individual polycyclic aromatic hydrocarbons (PAHs), fullerene $C_{60}$ or other drug/biological cations are recorded by monitoring the photofragmentation process through resonance enhanced multiphoton dissociation (REMPD). The combination of the versatility of the ion trap as a mass spectrometry and mass selection technique and the molecular conformation selectivity of laser spectroscopy make the apparatus a powerful tool for direct sampling analysis. It also provides access to information on the process and dynamics of the photo-induced fragmentation.
Description
Author Institution: Department of Chemistry, University of British Columbia