Positive ion mobility in normal and superfluid /sup 3/He

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00117066· OSTI ID:6773491

Kokko, J; Paalanen, M A; Schoepe, W; Takano, Y

The mobility of positive ions has been measured in the normal and superfluid phases of /sup 3/He at several pressures. Below 100mK the normal phase mobility increases logarithmically with decreasing temperature down to the superfluid transition temperature T/sub c/; it shows an anomalous jump near 100 mK. At low temperatures the drift velocity is nonlinear for electric fields exceeding 30V/cm. In the superfluid the mobility, normalized to its value at T/sub c/, is much less than for negative ions. We have also observed the anisotropic mobility in the A phase and the Landau critical veloctiy for pair-breaking in both superfluid phases.

• Research Organization: Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland
• OSTI ID: 6773491
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 33:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL TEMPERATURE
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 3 A
HELIUM ISOTOPES
ION MOBILITY
ISOTOPES
LANDAU LIQUID HELIUM THEORY
LIGHT NUCLEI
MOBILITY
NUCLEI
PARTICLE MOBILITY
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE