Abstract
CD 3Br is excited to the υ 2 mode by absorption of the R(10) line of the 10.6μ (001–100) band of a Q-switch CO 2N 2He laser. Fluorescence has been detected and energy transfer rates measured in two wavelength regions. Around 5μ, activation occurs in approximately 10 gas-kinetic collisions, and in the region beyond 14μ, activation requires 77 collisions. Within experimental error, deactivation of both signals occurs at the same rate, corresponding to 550 collisions. Deactivation by rare gases was also studied in the 5μ region. Mechanisms and comparisons to other systems are discussed in terms of energy gaps and breathing sphere parameters for the processes involved.
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