Energy spectrum, normal-fluid density, and specific heat of /sup 3/He quasiparticles in dilute /sup 3/He-He II mixtures

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00681766· OSTI ID:6368307

Szprynger, A

Several recently proposed forms of the /sup 3/He quasiparticle energy spectrum in /sup 3/He-He II mixtures are examined. Contributions of the quasiparticles to the normal-fluid density rho/sub n/3 and the specific heat C/sub 3/ are calculated by using various impurity spectra and compared. Influence of deviations from the Landau-Pomeranchuk quadratic dispersion relation on the momentum distribution of rho/sub n/3 and C/sub 3/ is discussed. The two examined theoretical results of the /sup 3/He excitation spectrum overestimate the magnitude of deviations in the small-momentum region.

• Research Organization: Institute for Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wroclaw, P.O.B. 937, Poland
• OSTI ID: 6368307
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 49:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DENSITY
DISPERSION RELATIONS
DISPERSIONS
ENERGY SPECTRA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUIDS
HELIUM 3
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MIXTURES
NUCLEI
PHYSICAL PROPERTIES
QUANTUM FLUIDS
QUASI PARTICLES
SPECIFIC HEAT
SPECTRA
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES