Temperature dependent rate constants for O2(b) deactivation by O2(X)

Rate constants for the deactivation of O
₂
(b) by collisions with O
₂
(X) have been determined in the temperature range from 297 to 800 K. O
₂
(b) was excited by pulses from a tunable dye laser, and the deactivation kinetics were followed by observing the temporal behavior of the b
¹
Σ
_g
- X
³
Σ
_g
transition fluorescence. The deactivation rate constants for O
₂
can be represented by the expression k
_O2
=7.4×10
^-17
×T
^0.5
×exp(-1104.7±53.3/T).