Extraction of the condensate fraction from the momentum distribution in superfluid /sup 4/He

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.32.3289· OSTI ID:5297169

Griffin, A

Hiigh-momentum neutron scattering data can be used to find the momentum distribution n(p) of atoms in superfluid /sup 4/He. The analysis of these data is complicated because the momentum distribution of the noncondensate atoms has an anomalous contribution which depends on the presence of the Bose condensate. We discuss a new way of estimating this contribution and show that the resulting values of the condensate fraction n/sub 0/(T) are quite different from those given in the recent literature.

• Research Organization: Department of Physics and Scarborough College, University of Toronto, Toronto, Ontario, Canada M5S1A7
• OSTI ID: 5297169
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:5; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COHERENT SCATTERING
CONDENSATES
DIFFRACTION
DISTRIBUTION FUNCTIONS
EVEN-EVEN NUCLEI
FLUIDS
FUNCTIONS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LINEAR MOMENTUM
NEUTRON DIFFRACTION
NUCLEI
QUANTITY RATIO
QUANTUM FLUIDS
SCATTERING
STABLE ISOTOPES
SUPERFLUIDITY