Elsevier

Nuclear Physics A

Volume 118, Issue 3, 14 October 1968, Pages 538-544
Nuclear Physics A

Decay of 78.4 h 89Zr

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Abstract

Sources of 78.4 h 89Zr were produced by the 89Y(p, n)89Zr reaction, and the decay properties were studied with Ge(Li) detectors. The energies of previously reported γ-ray transitions were measured as Eγ = 909.1±0.1, 1620.6±0.7 and 1713.0±0.6 keV. Two new transitions of Eγ = 1656.9±0.7 and 1744.4±0.7 keV were also observed, the latter being assigned as a ground state transition from the 52 state. The absence of any observed cascade feeding of this state leads to log ft = 8.3 for this unique first-forbidden transition.

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Present address: Foster Radiation Laboratory, McGill University, Montreal.

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