Open AccessMultiphoton ionization of ions, neutrals, and clusters. Progress report
Author(s) -
John E. Wessel
Publication year - 1991
Language(s) - English
Resource type - Reports
DOI - 10.2172/674620
Subject(s) - ionization , fluorene , cluster (spacecraft) , ion , photoionization , chemistry , molecule , atomic physics , chemical ionization , electron ionization , excimer , thermal ionization , atmospheric pressure laser ionization , chemical physics , fluorescence , physics , organic chemistry , quantum mechanics , computer science , programming language , polymer
Scientific results are summarized from a three year research program on multiphoton ionization in aromatic molecules, clusters, and their ions. As originally proposed, the studies elucidated a new cluster ionization mechanism, characterized properties of long range intermolecular interactions, and investigated electronic transitions of aromatic cations cooled in a supersonic beam. The studies indicate that the new cluster ionization mechanism is highly efficient and dominates conventional 1 + 1 resonant ionization. In the case of the dimer of the large aromatic molecule fluorene, the results suggest that excimer formation competes with a direct ionization process. Highly selective excitonic spectra have been identified for several cluster species