Diffraction Studies of Water Under Pressure

During the past decade, improvements in experimental techniques and computer simulation methods have led to a more comprehensive understanding of the properties of water [1]. Foremost amongst these are X-ray and neutron diffraction which provide information directly of the microscopic structure [2]. Such information is in the form of a structure factor F(k) and its real space Fourier transformation G(r). F(k) and G(r) can be used to test the various models of water used in computer simulation studies. G(r) can also provide a basic picture of the short range structure of water characterised by interparticle separations and coordination numbers.