Mechanism of CF3Br Photolysis at the Wavelength of 253.7 nm

Photolysis of C2H2F2Br2 Mixture with O2 in the Oxygen Pressure Range 1–3.5 Torr

“…The intensity of the lamp was found to be (1.9 ± 0.2) × 10 15 quanta/(cm 2 s). The setup for studying the photolysis of freons and the experimental procedure are described in more detail in [5].…”

“…3, the partial pressure of the consumed C 2 H 2 F 2 Br 2 was considered to be double the pressure of the formed molecular bromine. The partial pressure was calculated by formula (5); and the absorption cross section of the C 2 H 2 F 2 BrO 2 radical, according to formula (4).…”

“…The ratio k VI /k VII was determined by us earlier to be 26 [5], and the concentration of Br 2 was determined from the graph of the dependence of the optical density at a wavelength of 416 nm on the time of irradiation. The graph of the dependence of the optical density at a wavelength of 240 nm, D 240 , from the time of irradiation at the initial pressure of CH 3 Br equal to 40 Torr and oxygen pressure equal to 2.4 Torr is shown in Fig.…”