Isomer-separated photodissociation of large sized silicon and carbon cluster ions: Drift tube experiment combined with a tandem reflectron mass spectrometer for Si 24 + - Si 27 + and C 32 + -C 38 +

Ryoichi Moriyama, Tomohiro Ohtaki, Jun Hosoya, Kiichirou Koyasu, Fuminori Misaizu

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Abstract

Isomer-resolved multiphoton dissociations (PDs) with 4.66-eV laser photons were applied to carbon and silicon cluster cations, C\hbox{$-{n}^{{+}} $}+n (n = 32, 34, 36, and 38) and Si\hbox{$-{m}^{{+}}$}+m (m = 24-27), in order to investigate correlations between the isomer structures and dissociation reactions. Cyclic and fullerene structures of C\hbox{$-{n}^{{+}}$}+n and prolate and spherical isomers of Si\hbox{$-{m}^{{+}}$}+m, which are the coexisting isomers in these size ranges, were separated by ion mobility spectrometry, followed by photolysis using a tandem reflectron mass spectrometer. Photofragment ion distributions were revealed to depend on the parent isomer structures. Dissociation mechanisms were discussed from the fragment ion distributions.

Original languageEnglish
Article number13
JournalEuropean Physical Journal D
Volume67
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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