Abstract
Ethylene gas was irradiated using a 660 W/cm 2 cw CO 2 laser emitting at 10.6 μm. When the pressure increases, both the light absorption (α = 0.016 torr −1 cm −1) and the chemical decay rate reach a limiting value. Poor experimental agreement with Landau—Teller or SSH theory is observed when T changes, and the limiting reaction rate coincides with a limiting quantum yield, from which a corresponding activation energy of 192.4 kJ/mole is deduced. The qualitative mechanism of decomposition can be explained, assuming a heat cooling control of the output molecular energy deposited through the translational degrees of freedom, which is similar to the control by heat transport of the fluorescence slow decay rate.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call