science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: ammonia Other Names: Formula: NH3 CAS-No.: 7664-41-7 Study: uv absorption spectra Authors: F.Z. Chen, D.L. Judge, C.Y.R. Wu, J. Caldwell Title: Low and Room Temperature Photoabsorption Cross Sections of NH3 in the UV Region Journal/Source: Planetary and Space Science, 47, 261-266, (1999); http://dx.doi.org/10.1016/S0032-0633(98)00074-9 Data: table, diagram Energy/Wavelength range: 175 nm - 225 nm Resolution: 0.05 nm (FWHM) Temperature: 175 K, 195 K, 295 K Temperature dependence: yes Pressure/Concentration: Phase: gas pH: Comments: The photoabsorption cross sections of NH3 have been measured from 1750 to 2250 Å under temperature conditions of 295, 195, and 175 K. Significant temperature effects in the absorption threshold region which are mainly due to the presence of hot band absorption are observed. Author to whom correspondence should be addressed: (e-mail address):