TITLE

Large volume high-pressure cell for inelastic neutron scattering

AUTHOR(S)
Wang, W.; Sokolov, D. A.; Huxley, A. D.; Kamenev, K. V.
PUB. DATE
July 2011
SOURCE
Review of Scientific Instruments;Jul2011, Vol. 82 Issue 7, p073903
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Inelastic neutron scattering measurements typically require two orders of magnitude longer data collection times and larger sample sizes than neutron diffraction studies. Inelastic neutron scattering measurements on pressurised samples are particularly challenging since standard high-pressure apparatus restricts sample volume, attenuates the incident and scattered beams, and contributes background scattering. Here, we present the design of a large volume two-layered piston-cylinder pressure cell with optimised transmission for inelastic neutron scattering experiments. The design and the materials selected for the construction of the cell enable its safe use to a pressure of 1.8 GPa with a sample volume in excess of 400 mm3. The design of the piston seal eliminates the need for a sample container, thus providing a larger sample volume and reduced absorption. The integrated electrical plug with a manganin pressure gauge offers an accurate measurement of pressure over the whole range of operational temperatures. The performance of the cell is demonstrated by an inelastic neutron scattering study of UGe2.
ACCESSION #
63502324

 

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