“…The recently studied enhancements, as well as those in previous studies [13,14,15], were uniformly ascribed, in references [10][11][12], to the interaction between excited N 2 , (also described as N * 2 for electronically excited N 2 , and as N ♣ 2 for vibrationally excited N 2 , respectively), and electronically excited O 2 , (also O * 2 ), that led to collisional intersystem crossing into the N 2 (B 3 Πg) state [10]. On the basis of the available evidence, the N 2 (A 3 Σu + ) state was explicitly included [10,12], contrary to its specific exclusion [5]. The term 'intersystem crossing' was used in the looser, more general sense of previous work [16].…”