Accession Number : AD0474515


Title :   NUCLEAR MAGNETIC RELAXATION IN LIQUID METALS, ALLOYS, AND SALTS.


Descriptive Note : Interim technical rept.,


Corporate Author : HARVARD UNIV CAMBRIDGE MA CRUFT LAB


Personal Author(s) : Hanabusa, Mitsugu


Report Date : 14 MAY 1965


Pagination or Media Count : 124


Abstract : Nuclear relaxation phenomena have been studied in systems in which extremely fast modulations of the perturbing interactions by internal motions exist. A comparison of the spin-lattice relaxation time T1 and the spin-spin relaxation time T2 has been of particular interest, as well as an investigation of the various possible relaxation mechanisms, including the well-known Fermi contact hyperfine interaction. Comprehensive calculations of relaxation times for all important perturbing interactions have been made on the basis of the Redfield theory. Experiments measured both T1 and T2, and examined the dependence of the relaxation times on temperature, isotopic abundance, solute concentration, impurity content, and so on. Whenever necessary, Knight shifts were measured and the results were used in combination with the relaxation time data. All measurements were made with a coherent pulsed nuclear resonance apparatus, and the sample temperature was controlled by means of hot air oven. (Author)


Descriptors :   *NUCLEAR MAGNETIC RESONANCE, *ALKALI METAL ALLOYS, *LIQUID METALS, *SALTS, NUCLEAR MAGNETIC RESONANCE, NUCLEAR MAGNETIC RESONANCE, RELAXATION TIME, SODIUM, GALLIUM, SODIUM ALLOYS, THALLIUM, THALLIUM COMPOUNDS, MELTING, NUCLEAR SPINS, QUANTUM THEORY, OPERATORS(MATHEMATICS), BIBLIOGRAPHIES, INTEGRAL EQUATIONS, TEST EQUIPMENT, MATHEMATICAL ANALYSIS.


Subject Categories : PHYSICAL CHEMISTRY
      QUANTUM THEORY AND RELATIVITY


Distribution Statement : APPROVED FOR PUBLIC RELEASE