ANGULAR DEPENDENCE OF NUCLEAR SPIN-LATTICE RELAXATION TIME FOR SEVERAL ALKALI HALIDE CRYSTALS

Journal Article · Sat Dec 31 23:00:00 EST 1960 · Proc. Phys. Soc. (London)

DOI:https://doi.org/10.1088/0370-1328/77/1/304· OSTI ID:4083474

Andrew, E R; Swanson, K M; Williams, B R

S>The anisotropy of relaxation time for bath F/sup 19/ and Li/sup 7/ was examined in a pure single crystal of lithium fluoride and was satisfactorily accounted for in terms of Bloembergen's spin-diffusion theory of relaxation. Confirmation was provided by the reduced anisotropy observed in two single crystals of lithium fluoride cortaining enhanced concertrations (50 and 90%) of Lis/sup 6/ The lack of anisotropy of the Na/sup 23/ relaxation time found in sodium chloride was in accord with the predictions of the theories of quadrupolar relaxation. A similar observation for the Br/sup 79/ and Br/sup 81/ relaxation times in potassium bromide was not inconsistent with van Kranendonk's theory and suggested that covalency does not make a atrong cortribution to the quadrupolar relaxation process. (auth)

• Research Organization: University Coll., North Wales, Bangor, Wales
• NSA Number: NSA-15-011851
• OSTI ID: 4083474
• Journal Information: Proc. Phys. Soc. (London), Journal Name: Proc. Phys. Soc. (London) Vol. Vol: 77
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKALI METALS
ALLOYS
ANISOTROPY
BROMINE 79
BROMINE 81
CASTING
CRYSTALS
DEFECTS
DIFFUSION
DISTRIBUTION
ELECTRIC ARCS
ELECTRIC MOMENTS
FLUORINE 19
HALIDES
INTERACTIONS
LITHIUM 6
LITHIUM 7
LITHIUM FLUORIDES
MELTING
MIXING
MOLYBDENUM
MONOCRYSTALS
NIOBIUM
NUCLEAR MAGNETIC RESONANCE
NUCLEI
OXIDES
PHYSICS
POTASSIUM BROMIDES
QUADRUPOLES
REDUCTION
RELAXATION
SODIUM 23
SODIUM CHLORIDES
SPIN
TANTALUM
TUNGSTEN