“…It should also be noted that, in contrast to the assumed [14,30,57,58] {O 2 (a 1 D g ) + N( 4 S)} chemical reaction, there is clear evidence of O( 1 S) product formation assigned to the fN 2 ðA 3 R þ u Þ þ Oð 3 PÞg chemical reaction [54,55,73,74]. However, the reported branching fraction {>0.25 [55], (0.75 ± 0.13) [54] and (0.80 ± 0.25) [73]} for O( 1 S) product formation was estimated from the variation of the concentration ratio ½Oð 1 SÞ=½N 2 ðA 3 R þ u ; m ¼ 0Þ as a function of the O( 3 P) atom concentration.…”