Abstract
Nuclear magnetic resonance has been observed on radioactive182Ta and183Ta oriented at low temperature in an Fe host, by detection of the change in spatial anisotropy of γ-rays emitted during nuclear decay. By measuring the resonant frequencies of183Ta in four different applied magnetic fields the nuclear magnetic moment and hyperfine field have been deduced. These are:
. The spin of the ground state of182Ta has been determined asI=3 by comparing resonance results with those obtained in a thermal equilibrium nuclear orientation study. The ratio of the resonant frequencies observed for182Ta and183Ta at one applied field value yields a magnetic moment for the former of
. The spin lattice relaxation time for183TaFe (0.12 at% Ta) at 18 mK in an applied field of 0.5 T has been found to be 40(10) s.
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Allsop, A.L., Chaplin, D.H., Murray, D.W. et al. NMR-on of182Ta and183Ta in Fe. Hyperfine Interact 8, 229–238 (1980). https://doi.org/10.1007/BF01026871
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DOI: https://doi.org/10.1007/BF01026871