Experimental determination of the electronic transition moment for the NO(A 2Σ + - X 2Π) system lifetimes of the NO(A 2Σ +, υ

• Published in: Chemical physics 1978-08, Vol.32 (2), p.239-246
• Main Authors: Möhlmann, G.R., Van Sprang, H.A., Bloemen, E., De Heer, F.J.
• Format: Article
• Language: English
• ISSN: 0301-0104
• DOI: 10.1016/0301-0104(78)87056-6

The electronic transition moment ( R e) has been obtained for the NOγ band system (A 2Σ + - X2 ) as a function of the internuclear separation r υ′υ″ by means of light intensity measurements between 2000 and 3000 Å. The light emission was produced by electron impact on NO gas. It has been found in the present work that R e does not vary as a function of r υ′υ″ in the range 1.004 Å ⩽ r υ′υ″ ⩽ 1.165 Å. Furthermore the radiative lifetimes (τ rad) of the NO (A 2Σ +, υ′ = 0,1,2) states have been determined to be equal to 200 ± 10, 195 ± 10 and 190 ± 10 ns, respectively. Absolute values are also given for R e( r υ′υ″), (= 0.13 au), and for the band oscillator strengths f υ′υ″(= 4.04 × 10 −4 for υ′ = 0 → υ″ = 0). Our R e( r υ′υ″), f υ′υ″ and τ rad values are compared with those of other groups.