Elsevier

Nuclear Physics A

Volume 194, Issue 3, 30 October 1972, Pages 449-457
Nuclear Physics A

New isotopes 73Zn and 74Zn

https://doi.org/10.1016/0375-9474(72)90993-1Get rights and content

Abstract

The decay characteristics of the new neutron-rich isotopes 73Zn and 74Zn have been investigated using isotopically separated samples produced by the ISOLDE on-line facility. Beta and γ-ray spectra were recorded, partly in coincidence, by means of a Ge(Li) and a plastic detector. Beta end-point energies have been determined from the Fermi-Kurie plot as well as from a cube-root plot. The Q-values of 73Ga and 74Ga were remeasured to 1.61 ± 0.10 MeV and 5.3 ± 0.2 MeV. The following half-lives and Q-values were assigned to the new Zn isotopes: 73Zn: T12 = 23.5 ± 1.0 sec, Qβ≧4.7 MeV, 74Zn: T12 = 98 ± 2 sec, Qβ≧ 2.1 MeV.

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Present address: Los Alamos Scientific Laboratory, Los Alamos, New Mexico, USA.

††

Present address: Institute of Nuclear Research, Swierk, Warsaw, Poland

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