Abstract
The temperature dependence of the precession of the angular correlation of decay gamma rays from swift150Sm (21+) ions traversing a gadolinium foil has been found to be proportional to the foil magnetization, supporting the assertion that the transient hyperfine magnetic field acting on these ions is proportional to the magnetization of the hosts (iron or gadolinium). Similar experiments on194Pt (21+) ions traversing iron and gadolinium foils are consistent with both the magnetic moment obtained from Rutgers experiments on iron and with a hyperfine field at Pt ions larger for gadolinium than for iron foils, in agreement with the Chalk River parametrization for heavy nuclei traversing gadolinium foils. Finally, the magnetic moments of the 21+ states in144–150Nd,145,150Sm and152Gd have been measured. These data support the evidence of shell closure atZ=64 forN≤88 andZ=50 forN>90.
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