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):