Author:
Kovtun G.P.,Shcherban A.P.,Solopikhin D.A.,Virych V.D.,Gorbenko Yu.V.
Abstract
A process has been developed to produce high-purity granular zinc for growing Zn82Se scintillation crystals de-signed to study the neutrinoless double beta decay (0ν2β) of the selenium isotope 82Se in the CUPID-0 experiment. The chemical and isotopic compositions of high-purity zinc were studied and its radioactive purity was evaluated. At a level less than mBqkg-1 in the background spectrum of high-purity zinc, measured by a germanium detector, no peaks were observed for natural radionuclides 40K, 60Со, 137Cs and the uranium-thorium decay chain. An in-creased activity of such nuclides as 54Mn, 56Со, 57Со, 58Co, and 65Zn, formed mainly due to cosmogenous effects, was noted.
Publisher
Problems of Atomic Science and Technology
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