Quasi-elastic neutron scattering in the multi-GPa range and its application to liquid water

S. Klotz, Th. Strässle, L. E. Bove
2013 Applied Physics Letters  
We present a method which allows quasi-elastic neutron scattering (QENS) at multi-GPa pressures, i.e., pressure conditions which are an order of magnitude higher than possible with QENS till now. The technique uses an opposed-anvil geometry with a sample chamber in the form of a toroid which minimizes multiple scattering effects. This method has been applied to measurements of the self-diffusion coefficient of water at 400 K up to 3 GPa. The results demonstrate the potential of this method for
more » ... of this method for studying diffusion over a large pressure and temperature range. V C 2013 AIP Publishing LLC.[http://dx.
doi:10.1063/1.4828661 fatcat:nct2vrloibbkreolkoqyhsym3i