| EPSRC Reference: |
GR/M18362/01 |
| Title: |
DISORDER IN QUANTUM SYSTEMS |
| Principal Investigator: |
Thomas, Dr MF |
| Other Investigators: |
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| Department: |
Physics |
| Organisation: |
University of Liverpool |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1998 |
Ends: |
30 September 2001 |
Value (£): |
216,730
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| EPSRC Research Topic Classifications: |
| Condensed Matter Physics |
Quantum Fluids & Solids |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Neutron inelastic scattering investigations are proposed to study the effects of local environment on the phonon-roton excitations and momentum distributions of He-4 and He-3/He-4 mixtures in aerogel, xerogel and vycor glasses. These confining media have very different pore morphologies and porosities, leading to a range of important effects on the properties of the quantum liquids.The variation with temperature of the excitation energy and lifetime (linewidth) will be examined for He-4 in contrasting porous media, a special study of roton energies and lifetimes close to the lambada transition will be made, and the effects of confinement on the Bose Condensate fraction investigated.For mixtures of He-3 in He-4, the changes to n(p) imposed by the restricted geometry will be studied using the extremely high-energy resolution of IRIS and the density and temperature dependence of n (p) determined. The Fermi surface of liquid He-3, and the excitations and momentum distributions of bulk He-3/He-4 mixtures will be probed.This programme will exploit the high resolution and signal of the ISIS spectrometers, IRIS and MARI, complemented by the IN5 andIN6 instruments at ILL.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.liv.ac.uk |