Decay of Zn61

James B. Cumming
Phys. Rev. 114, 1600 – Published 15 June 1959
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Abstract

The 88.5-sec activity observed among the products of the bombardment of nickel with 16-Mev alpha particles is assigned to Zn61. The decay properties of this isotope have been investigated by beta and gamma scintillation techniques and by coincidence measurements. Approximately 80% of the Zn61 beta decays are to the ground state of Cu61. The positron end point is 4.38 Mev which corresponds to a log ft of 5.2 and to an allowed transition. Gamma rays of 0.48, 0.98, and 1.64 Mev have been observed with intensities of 11.2, 2.9, and 6.2% of the positrons. There is some indication of gamma rays at 0.69 Mev and possibly other energies in lower intensities. A decay scheme is proposed which incorporates the above data into an existing level scheme of Cu61 derived from (p, γ) experiments.

  • Received 26 January 1959

DOI:https://doi.org/10.1103/PhysRev.114.1600

©1959 American Physical Society

Authors & Affiliations

James B. Cumming

  • Chemistry Department, Brookhaven National Laboratory, Upton, New York

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Vol. 114, Iss. 6 — June 1959

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