The dissociation dynamics of state selected metastable aniline ions single and multiphoton ionization

Article abstract of DOI:10.1063/1.443148

The lifetimes with respect to dissociation of state selected aniline ions have been investigated by photoion-photoelectron coincidence.Lifetimes between 0.3 and 100 μs have been found when the aniline ion is prepared in energies ranging from 13.6 to 12.6 eV, respectively.These lifetimes are in good agreement with those of a recent study by Proch, Rider, and Zare, who observed metastable aniline ions in a UV multiphoton ionization (MPI) study in which three photons were required to reach the metastable ion energy range.By contrast, our visible MPI study of anilineshows no evidence for long-lived ions.This paradox is resolved by postulating that under the UV MPI conditions, a radiationless transition to the ground electronic state allows the 13 eV ions time to dissociate slowly, while under the much higher photon intensities needed in the visible MPI study, rapid up pumping of the excited ions prevents radiationless transitoins.A lower limit for the radiationless transitions rate of 2*10⁸ s^-1 is derived.

Full text of DOI:10.1063/1.443148

The dissociation dynamics of state selected metastable aniline ions by single and
multiphoton ionization
Tomas Baer and Thomas E. Carney
Citation: The Journal of Chemical Physics 76, 1304 (1982); doi: 10.1063/1.443148
View online: http://dx.doi.org/10.1063/1.443148
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/76/3?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Fri, 28 Nov 2014 02:59:26

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Fri, 28 Nov 2014 02:59:26

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Fri, 28 Nov 2014 02:59:26

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Fri, 28 Nov 2014 02:59:26

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
128.114.34.22 On: Fri, 28 Nov 2014 02:59:26