Photoionization yield and absorption coefficient of nitric oxide were measured at many wavelengths in the region 580–1350 Å. H emission and helium continuum sources were used with a 1-m monochromator. Absolute intensity measurements were based on a calibrated thermocouple.
K. Watanabe, Frederick M. Matsunaga, and Hajime Sakai, "Absorption Coefficient and Photoionization Yield of NO in the Region 580–1350 Å," Appl. Opt. 6, 391-396 (1967)