Published October 1, 2004
| Version v1
Journal article
Excitations of metastable superfluid He4 at pressures Up to 40 bars
- 1. Institut Laue-Langevin, BP 156, 38042 Grenoble (France)
- 2. Centre de Recherches sur les Tres Basses Temperatures, CNRS, BP 166, 38042 Grenoble (France)
- 3. Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)
Description
Neutron scattering measurements of the fundamental excitations of liquid He4 confined in 44 A pore diameter gelsil glass at pressures up to 40 bars in the wave vector range 0.41.6 A-1, especially the rotons, are observed up to complete solidification of all the liquid at a pressure of ∼40 bars where the roton vanishes. At and above a pressure of 35.1 bars, Bragg peaks are observed, indicating coexistence of liquid and solid in the pores at pressures 35 < or approx. P < or approx. 40 bars
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 93
- Journal Issue
- 14
- Journal Page Range
- p. 145303-145303.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36060827
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BRAGG CURVE; EXCITATION; GLASS; HELIUM 4; LIQUIDS; METASTABLE STATES; NEUTRON DIFFRACTION; PHONONS; PRESSURE RANGE MEGA PA 01-10; ROTONS; SOLIDIFICATION; SOLIDS; SUPERFLUIDITY; TEMPERATURE RANGE 0000-0013 K
- Descriptors DEC
- COHERENT SCATTERING; DIAGRAMS; DIFFRACTION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITED STATES; FLUIDS; HELIUM ISOTOPES; INFORMATION; ISOTOPES; LIGHT NUCLEI; NUCLEI; PHASE TRANSFORMATIONS; PRESSURE RANGE; PRESSURE RANGE MEGA PA; QUASI PARTICLES; SCATTERING; STABLE ISOTOPES; TEMPERATURE RANGE
Optional Information
- Notes
- (c) 2004 The American Physical Society