Production of tin-lead solder based on archaeological lead for low-background experiments
N.T. TemerbulatovaDzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (JINR), Joliot-Curie 6, Dubna, 141980, RussiaN.A. MirzayevDzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (JINR), Joliot-Curie 6, Dubna, 141980, RussiaD. V. KaraivanovLaboratory of Positron Spectroscopy, Institute for Nuclear Research and Nuclear Energy (INRNE), Tzarigradsko chaussee, Sofia, BG-1784, BulgariaElena KurakinaDepartment of High-Energy Chemistry and Radioecology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya 1, Moscow, 125047, RussiaAyagoz BaimukhanovaLaboratory of Neutron Physics, Institute of Nuclear Physics, Ibragimova 1, Almaty, 050032, KazakhstanA. V. RakhimovNuclear analytical laboratory, Institute of Nuclear Physics of the Academy of Sciences of Uzbekistan, Gulomov 70, Tashkent, 100214, UzbekistanM. De JésusInstitute of Nuclear Physics of LyonS.V. RozovDzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (JINR), Joliot-Curie 6, Dubna, 141980, RussiaD. V. FilosofovDzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (JINR), Joliot-Curie 6, Dubna, 141980, RussiaE. YakushevDzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (JINR), Joliot-Curie 6, Dubna, 141980, Russia
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Abstract The present study reports the production of low radioactive tin-lead solder (at a ratio of 60% to 40%) based on archaeological lead. The solder can be employed in low-background experiments, which search for dark matter and the neutrinoless double beta decay using the bolometric method. The product impurity content has been estimated via low-background gamma spectrometry. The specific activity of the 238 U, 232 Th, and 40 K isotopes in the synthesized solder was below the minimum detection activity of the spectrometer ( 40 K < 1.24 mBg/kg, 232 Th < 2 mBg/kg and 238 U < 8.6 mBg/kg).
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