Near-infrared spectroscopic study of water at high temperatures and pressures
Y Jin, S Ikawa - The Journal of chemical physics, 2003 - pubs.aip.org
Near-infrared absorption of the OH stretching overtone transition of water has been
measured at temperatures and pressures in the ranges of 373–673 K and 20–400 bar,
respectively. The absorption profile at 673 K and 400 bar retains a mark of rotational
structure, indicating that an appreciable proportion of water molecules can rotate quite
freely. The molar absorption intensity decreases linearly with increasing pressure in the low-
pressure region. Enthalpy for dimerization has been estimated to be 15±3 kJ/mol from the …
measured at temperatures and pressures in the ranges of 373–673 K and 20–400 bar,
respectively. The absorption profile at 673 K and 400 bar retains a mark of rotational
structure, indicating that an appreciable proportion of water molecules can rotate quite
freely. The molar absorption intensity decreases linearly with increasing pressure in the low-
pressure region. Enthalpy for dimerization has been estimated to be 15±3 kJ/mol from the …
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