抄録
The TEA CO2 laser-induced infrared multiphoton dissociation (IRMPD) of CTF3 diluted in a large excess of a CHF3 buffer gas cooled at -78 °Cwas studied as a function of laser fluence and gas pressure. The dissociation rate for CTF3 increased with an increase in pressure in the region below 45 Torr owing to collisional relaxation of rotational bottle-necking, while it decreased above 45 Torr owing to collisional de-excitation. An energy-grained master equation (EGME) incorporating these pressure effects was used to simulate the experimental results on the CTF3 dissociation. The EGME was numerically solved from trajectory calculations based on a stochastic method. We found that the EGME successfully predicted the pressure dependence of the IRMPD of CTF3 over a wide range of experimental parameters.
