Fig. 10.

a Transitional energy diagram N2 SPS (C³II_u → N₂ B³II_g) and N₂ FPS (N₂₊ B²Σ_u ⁺ → N₂₊ X²Σ_g⁺). b Optical emission spectra of the N₂ SPS and the N₂ FPS. c Vibrational spectra of the N₂ SPS and magnified rotational spectrum in the 0–0 vibrational band around 337 nm of C³II_u (v = 0) → B³II_g (v = 0), as in the dotted box (c) [105]