High-Purity Zinc for Low-Background Experiments

— A process has been developed for the preparation of high-purity granulated zinc for the growth of Zn 82 Se scintillator crystals intended for investigation of neutrinoless double beta decay, 2β(0ν), of the 82 Se isotope in the CUPID-0 experiment. We have determined the chemical and isotopic compos...

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Bibliographic Details
Published in:Inorganic materials 2020-02, Vol.56 (2), p.178-181
Main Authors: Kovtun, G. P., Shcherban’, A. P., Solopikhin, D. A., Virich, V. D., Gorbenko, Yu. V.
Format: Article
Language:English
Subjects:
Beta decay
Cesium 137
Cesium isotopes
Chemical composition
Chemistry
Chemistry and Materials Science
Cosmic rays
Germanium
Granulation
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Nuclides
Purity
Radioisotopes
Scintillation counters
Thorium
Uranium
Zinc
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Summary:— A process has been developed for the preparation of high-purity granulated zinc for the growth of Zn 82 Se scintillator crystals intended for investigation of neutrinoless double beta decay, 2β(0ν), of the 82 Se isotope in the CUPID-0 experiment. We have determined the chemical and isotopic compositions of high-purity zinc prepared by this process and assessed its radionuclide purity. The background spectrum of the high-purity zinc, measured with a germanium detector, showed no peaks of natural 40 K, 60 Co, or 137 Cs radionuclides or ones from the uranium–thorium decay series. We have noticed an increased activity of the 54 Mn, 56 Со, 57 Со, 58 Co, and 65 Zn nuclides, resulting mainly from the exposure to cosmic rays.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168520010082