DETERMINATION OF THE RADIATIVE LIFETIMES OF 9 ION-PAIR STATES OF I2

PJ JEWSBURY, KP LAWLEY, T RIDLEY, FF ALADEL, PRR LANGRIDGESMITH, RJ DONOVAN

Research output: Contribution to journalArticlepeer-review

Abstract

The radiative lifetimes of 9 out of the 20 possible ion-pair states of I2 have been measured using two-colour optical-optical double-resonance excitation. A pulse-shortened dye laser was used to populate the final state. Lifetimes for all six states in the first cluster - delta(2u), gamma(1u), D(0u+), D'(2g), beta(1g) and E(0g+) - have been measured again in view of the often discordant literature values. The lifetimes of three states in the second ion-pair cluster (H(1u), F(0u+) and f(0g+)) are reported for the first time. No significant pressure dependence was found up to 100 m Torr, with the exception of the longest lived-gamma-state.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalChemical physics
Volume151
Issue number1
Publication statusPublished - 1 Mar 1991

Keywords

  • MOLECULAR-IODINE
  • DIATOMIC-MOLECULES
  • FLUORESCENCE
  • I-2
  • PREDISSOCIATION
  • SPECTROSCOPY
  • TRANSITION
  • REGION
  • ICI

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