A STUDY OF THE A(0(U)(-130(2) BY LIF - FLUORESCENCE LIFETIMES OF SPECIFIC ROVIBRATIONAL LEVELS()) AND B(0(U)(+)) STATES OF TE)

Fluorescence lifetimes from specific (upsilon', J') rovibrational leve ls of the A(0u+) and B(0u+) states of Te-2(130) have been measured by LIF. For the A state, lifetimes decrease slowly from upsilon' = 7 (943 +/- 68 ns) to upsilon' = 13 (764 +/- 12 ns), owing to the variation o f the electronic transition moment with internuclear distance. Lifetim es decrease sharply for upsilon' > 13, due to perturbation effects. A collision cross section of sigma = 140 +/- 6 angstrom2 has been measur ed. For the B state, collisionless lifetimes of 80 +/- 10 ns have been measured for upsilon' = 2-5, J < 100, in agreement with previous meas urements.