Longitudinal magnetic relaxation in superfluid /sup 3/He

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

DOI:https://doi.org/10.1007/BF00116916· OSTI ID:6666292

Sager, R E; Kleinberg, R L; Warkentin, P A; Wheatley, J C

Longitudinal magnetic relaxation in both /sup 3/He-A and /sup 3/He-B is studied in a variety of magnetic fields and three different geometries. Relaxation as described by Leggett and Takagi is observed for particular geometries in both /sup 3/He-A and /sup 3/He-B within a very limited range of magnetic field and temperature near T/sub c/. Under certain other conditions the longitudinal magnetization in /sup 3/He-A does not relax monotonically in time. Relaxation in /sup 3/He-B very near the critical temperature is shown to be remarkably different following nominal 90/sup 0/ and 180/sup 0/ pulses. Other observations using RF pulses with a time-dependent frequency provide evidence for a negative frequency shift in /sup 3/He-B at large tipping angles in certain geometries.

• Research Organization: Department of Physics, University of California: San Diego, La Jolla, California
• OSTI ID: 6666292
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 32:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL TEMPERATURE
ELECTRONIC EQUIPMENT
EVEN-ODD NUCLEI
FLUXMETERS
HELIUM 3
HELIUM 3 A
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIC FIELDS
MAGNETIZATION
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NUCLEI
PHYSICAL PROPERTIES
RELAXATION
RF SYSTEMS
SQUID DEVICES
STABLE ISOTOPES
SUPERCONDUCTING DEVICES
SUPERFLUIDITY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE