Fig. (9)
Production of N
2
+
(purple), O
2
+
(green), O
+
(light blue), NO
+
(orange) and the production of the A
2
Σ
+
state of NO (gold). Precipitating electrons carry a mean energy of 100 keV and a integrated energy of 1 erg.cm
-2
s
-1
.
