Abstract
The Mössbauer effect of 61Ni has been observed using a single line source, prepared by 100 min LINAC irradiation. Of the many sources evaluated, a 62NiCr (15%) gave the best results, with a ƒ-factor of 0.1 and a linewidth of 0.097 cm/sec at 80°K. The source was activated by 100 MeV bremsstrahlung radiation using the 62Ni(γ,p)61Co reaction. The pulse height spectrum showed a single peak at 67.3 keV, with no interfering radiation. The 1.7 h half-life of the source required repeated irradiations, but annealing was not required.
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