PRODUCT BRANCHING RATIOS OF THE CD+NO REACTION

The reaction of CD radicals with NO was studied by time-resolved diode laser absorption spectroscopy. CD radicals were generated by the 266- nm photolysis of CDBr3. Xenon buffer gas was used to relax excited CD( a(4) Sigma) radicals. Detected products include DCN, CO, and CO2 and N 2O products of secondary reactions. An upper limit was placed on the f ormation of CN products. After consideration of important secondary re actions, the following branching ratios were obtained: 47.5 +/- 12.2% for DCN + O, 18.8 +/- 5.5% for NCO + D, an upper limit of <7.5% for CN + OD, and 33.7 +/- 13.8% +/- for the sum of the CO + DN and DCO + N c hannels (error bars represent one standard deviation).