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Double photoionization of alcohol molecules
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
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2009 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 80, no 3, 32516- p.Article in journal (Refereed) Published
Abstract [en]

The double valence photoionization spectra of methanol, ethanol, and n-propyl alcohol have been recorded using a time-of-flight photoelectron-photoelectron coincidence technique. The spectra show a well-defined onset followed by broad rounded bands. The lowest vertical double ionization energies have been determined for all molecules and are found to be 32.1, 29.6, and 28.2 eV, respectively. These energies have been applied along with single ionization energies from conventional photoelectron spectra to investigate a recently derived rule of thumb for determination of the lowest double ionization energy in molecules. Many-electron ab initio calculations have been performed on the dicationic ground states in good agreement with the experimental values. For methanol, also excited dicationic states have been calculated up to about 40 eV and used for a detailed interpretation of the experimental spectrum.

Place, publisher, year, edition, pages
2009. Vol. 80, no 3, 32516- p.
Keyword [en]
multireference perturbation-theory, tof-pepeco measurements, double-ionization, wave-functions, basis-sets, spectra
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-59693DOI: 10.1103/PhysRevA.80.032516ISI: 000270383900088OAI: oai:DiVA.org:su-59693DiVA: diva2:429727
Note
authorCount :10Available from: 2011-07-05 Created: 2011-07-05 Last updated: 2017-12-11Bibliographically approved

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