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.
|Number of pages||7|
|Publication status||Published - 1 Mar 1991|