Inelastic neutron scattering study of water in the sub- and supercritical region

被引：5
|
作者：
Uffindell, CH
Kolesnikov, AI
Li, JC
Mayers, J
机构：
[1] Univ Manchester, Inst Sci & Technol, Dept Phys, Manchester M60 1QD, Lancs, England
[2] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England
来源：
PHYSICA B-CONDENSED MATTER | 2000年 / 276卷
基金：
英国工程与自然科学研究理事会;
关键词：
water; hydrogen bonds; quasielastic scattering;
D O I：
10.1016/S0921-4526(99)01657-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Inelastic neutron scattering (INS) measurements have been carried out on water in the sub- and supercritical region. The results were compared to estimated values of the kinetic energy of a hydrogen atom in a water molecule in the gas and; liquid states. The increase in kinetic energy with temperature was found to be more than expected from the harmonic approximation. It is concluded that about half of the hydrogen bonds in water with density of rho = 0.85 g/cm(3) are broken at 400 degrees C. The results also suggest a further decrease in the number of hydrogen bonds on decreasing the density at 400"C. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：444 / 445
页数：2
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