The dispersion of [sup 3]He quasiparticles in He II from neutron scattering

• Published in: Journal of low temperature physics Vol. 93:1-2
• Main Authors: Scherm, R., Guckelsberger, K., Szprynger, A., Fak, B.
• Format: Journal Article
• Language: English
• Published: United States 01.10.1993
• Subjects: BARYON REACTIONS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DISPERSIONS; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EXCITATION; FLUIDS; HADRON REACTIONS; HELIUM 3; HELIUM 4; HELIUM II; HELIUM ISOTOPES; HOLES; INELASTIC SCATTERING; ISOTOPES; LIGHT NUCLEI; MIXTURES; NEUTRON REACTIONS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; PHYSICAL PROPERTIES; QUANTUM FLUIDS; QUASI PARTICLES; SCATTERING; SPECIFIC HEAT; STABLE ISOTOPES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 665411 > Basic Superconductivity Studies > (1992-); THERMODYNAMIC PROPERTIES

In an inelastic neutron scattering (INS) experiment on [sup 3]He-[sup 4]He mixtures one observes, besides the photon-roton mode which is barely modified by the admixture of [sup 3]He, an additional excitation at lower energies which is interpreted as quasi-particle-hole excitations of a nearly free...