science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: water Other names: Formula: H2O CAS-No.: 7732-18-5 Study: vuv absorption cross section Authors: A. Zuber, G. Witt Title: Optical hygrometer using differential absorption of hydrogen Lyman-alpha radiation Journal/Source: Applied Optics, 26 (5), 3083-3089, (1987); doi:10.1364/AO.26.003083 Data: Energy/Wavelength range: 121.6 nm Resolution: Temperature: 293 K Temperature dependence: Pressure/Concentration: 700 Torr (total pressure) Phase: vapor pH: Comments: The absorption cross-sections of water vapor has been determined to be (1.64 ± 0.045) x 10-17 cm2 (ptot = 700 Torr, t = 20 C) at the Lyman-alpha wavelength. Author to whom correspondence should be addressed: (e-mail address):