Accession Number : AD0801380

Title :   NUCLEAR SPIN-LATTICE RELAXATION AND ELECTRIC FIELD GRADIENT IN LIQUID INDIUM.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY DEPT OF PHYSICS

Personal Author(s) : Rossini, F. A. ; Geissler, E. ; Dickson, E. M. ; Knight, Walter D.

Report Date : OCT 1966

Pagination or Media Count : 9

Abstract : The nuclear spin lattice relaxation rate is measured in the temperature range 130 to 300 C, and is found to be expressed by the relation 1/T sub 1 = (1.98 + 0/0082T) x 1000/sec. The two terms are attributable respectively to the quadrupole interaction and the magnetic hyperfine coupling. The latter is expected to be linear in the absolute temperature, and its magnitude a corresponds to the expected Korringa value. A model is constructed on the basis of fluctuations about a quasi-bcc lattice, and values of the rms field gradient (q sub E = 8.5 x 10 to the 24th power/cu cm) are related to the correlation times (tau sub c = 1.6 x 10 to the -13th power sec) for self diffusion and the related step lengths (delta r = 0.38 A) and the breadth of the x-ray diffraction peaks. (Author)

Descriptors :   *CRYSTAL LATTICES), (*INDIUM, (*NUCLEAR SPINS, CRYSTAL LATTICES), NUCLEAR MAGNETIC RESONANCE, RELAXATION TIME, TEMPERATURE, MAGNETIC PROPERTIES, HYPERFINE STRUCTURE, DIFFUSION, LIQUID METALS, IONS, MOTION, ELECTRONS, ELECTRIC FIELDS, CHARGED PARTICLES, NUCLEAR STRUCTURE, ERRORS, MATHEMATICAL MODELS, X RAY DIFFRACTION, CORRELATION TECHNIQUES.

Subject Categories : Metallurgy and Metallography
      Crystallography
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE