Rapid solvent-induced recombination and slow energy relaxation in a simple chemical reaction: Picosecond studies of iodine photodissociation in CCl4

M. Berg, Alex Harris, C. B. Harris

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The time scale for solvent ''caging'' in the classic I2 photodissociation reaction appears to be ≤15 ps, on the basis of examination of new picosecond absorption spectra. The previously observed slow recovery (>100 ps) of molecular absorption is shown to be due to both ground-state vibrational relaxation and excited-state trapping in the recombined molecule. In addition, newly observed absorptions in the 350-400-nm region provide direct information on solvent-induced predissociation and excited-state vibrational relaxation.

Original languageEnglish
Pages (from-to)951-954
Number of pages4
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 1985


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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