Time-resolved photoelectron imaging of S2 → S1 internal conversion in benzene and toluene

Yoshi Ichi Suzuki, Takuya Horio, Takao Fuji, Toshinori Suzuki

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49 Citations (Scopus)


Ultrafast internal conversion of benzene and toluene from the S2 states was studied by time-resolved photoelectron imaging with a time resolution of 22 fs. Time-energy maps of the photoelectron intensity and the angular anisotropy were generated from a series of photoelectron images. The photoelectron kinetic energy distribution exhibits a rapid energy shift and intensity revival, which indicates nuclear motion on the S2 adiabatic surface, while the ultrafast evolution of the angular anisotropy revealed a change in the electronic character of the S2 adiabatic surface. From their decay profiles of the total photoelectron intensity, the time constants of 48 ± 4 and 62 ± 4 fs were determined for the population decay from the S2 states in benzene and toluene, respectively.

Original languageEnglish
Article number184313
JournalJournal of Chemical Physics
Issue number18
Publication statusPublished - May 14 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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