POLARIZATION OF SILVER NUCLEI IN FERROMAGNETS AND THE INTERNAL MAGNETIC FIELD (thesis)
Technical Report
·
OSTI ID:4062066
The signs and magnitudes of the hyperfine-structure constants of two silver isotopes dissolved in the ferromagnetic metals iron and nickel were determined. The silver nuclei were polarized by application of a small magnetic field to alloys that had been cooled to about 0.01 deg K. Thermometry was performed by measurement of the polarization of Co/sup 60/ in the alloy. Spatial anisotropies of both beta and gamma rays from Ag/sup 104/ and Ag/sup 110m/ were measured. Parity was shown not to be conserved in the allowed beta decay of these isotopes. Spin assignments were made or confirmed for several excited states in Cd/sup 110/. The M1-E2 mixing ratios were determined for the 1384 and 1504-kev gamma rays following the decay of polarized Ag/sup 110m/. The products of the nuclear magnetic moment of Ag/sup 110m/ and the internal magnetic fields at the nuclei of silver dissolved in iron and nickel were found to be negative and equal to -(9.0 plus or minus 0.5) x 10/sup 5/ nm-gauss for Ag/sup 110m/ in iron and -(3.5 plus or minus 0.3) x 10/sup 5/ nm-gauss in nickel. The role of conductionelectron polarization in the production of internal magnetic fields in ferromagnetic metals is discussed. 56 references. (auth)
- Research Organization:
- California. Univ., Berkeley. Dept. of Chemistry; and California. Univ., Berkeley. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-18-016954
- OSTI ID:
- 4062066
- Report Number(s):
- UCRL-11143
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALLOYS
ANISOTROPY
BETA PARTICLES
BIBLIOGRAPHY
CADMIUM 110
COBALT 60
COBALT ALLOYS
CONFIGURATION
COOLING
DECAY
ELECTRONS
ENERGY LEVELS
FERROMAGNETIC MATERIALS
GAMMA RADIATION
IRON
ISOMERS
MAGNETIC FIELDS
MAGNETIC MOMENTS
MEASURED VALUES
NICKEL
NUCLEI
PARITY
PHYSICS
POLARIZATION
SILVER 104
SILVER 110
SOLUTIONS
SPIN
TEMPERATURE
THERMOMETERS
ANISOTROPY
BETA PARTICLES
BIBLIOGRAPHY
CADMIUM 110
COBALT 60
COBALT ALLOYS
CONFIGURATION
COOLING
DECAY
ELECTRONS
ENERGY LEVELS
FERROMAGNETIC MATERIALS
GAMMA RADIATION
IRON
ISOMERS
MAGNETIC FIELDS
MAGNETIC MOMENTS
MEASURED VALUES
NICKEL
NUCLEI
PARITY
PHYSICS
POLARIZATION
SILVER 104
SILVER 110
SOLUTIONS
SPIN
TEMPERATURE
THERMOMETERS