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

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 400K up to 3 GPa. The results demonstrate the potential of this method for studying diffusion over a large pressure and temperature range. (C) 2013 AIP Publishing LLC.


Published in:
Applied Physics Letters, 103, 19
Year:
2013
Publisher:
Melville, Amer Inst Physics
ISSN:
0003-6951
Laboratories:




 Record created 2014-01-09, last modified 2018-09-13


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