Kinetic study of the reactions sodium + oxygen + nitrogen and sodium + nitrous oxide over an extended temperature range

摘要: An investigation is presented of the recombination reaction Na + O{sub 2} N{sub by technique pulsed photolysis a atom precursor followed time-resolved laser induced fluorescence spectroscopy atoms at {lambda} = 589 nm. Termolecular behavior was demonstrated, and absolute third-order rate constants were obtained over temperature range 233-1118 K. A fit this data to form AT{sup {minus}n} yields k(T) ((2.9 {plus minus} 0.7) {times} 10{sup {minus}30})(T/300){sup {minus}(1.30{plus minus}0.04)} cm{sup 6} molecule{sup {minus}2} s{sup {minus}1}. This result compared two previous studies different experimental methods, which in marked disagreement below 600 The coefficients are then extrapolated from ambient mesospheric temperatures (140 K < T 240 K) flame (1500 2200 means highly satisfactory Troe formalism. We also describe study 2}O 280-850 results Arrhenius (2.8 0.3) {minus}10} exp(-(1590 50)/T) 3} {minus}1}