Fine Structure Analysis of NO Absorption Bands in the Schumann Region

Abstract

Rotational analyses of bands in the far ultra-violet absorption spectrum of nitric oxide have been carried out. The bands studied include the 0,0, 1,0, 2,0, 3,0 and 4,0 bands of the system (D²Σ⁺ - X²Π), the 4,0 and 5,0 bands of the γ system (A²Σ⁺ - X²Π), and the 8,0, 13,0 and 17,0 bands of the β system (B²Π - X²Π), as well as other bands ascribed to new systems. Summaries are given of the constants for the states A²Σ⁺, B²Π and D²Σ⁺. All bands in the absorption spectrum above 1600 Å have now been assigned. Possible Rydberg series are briefly discussed.