The Study of Radioactive Contaminations within the Production Processes of Metal Titanium for Low-Background Experiments

Zykova, M.; Voronina, E.; Chepurnov, A.; Leder, M.; Kornilova, M.; Tankeev, A.; Vlasov, S.; Chub, A.; Gangapshev, A.; Gezhaev, A.; Tekueva, D.; Avetisov, I.

Авторы: Zykova Marina, Voronina Elena, Chepurnov Alexander, Leder Mikhail, Kornilova Maria, Tankeev Alexey, Vlasov Sergey, Chub Alexander, Gangapshev Albert, Gezhaev Ali, Tekueva Dzhamilya, Avetisov Igor
Журнал: Materials
Том: 17
Номер: 4
Год издания: 2024
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Первая страница: 832
Последняя страница: 832
DOI: 10.3390/ma17040832
Аннотация: Ultra-low-radioactivity titanium alloys are promising materials for the manufacture oflow-background detectors which are being developed for experiments in astroparticle physics andneutrino astrophysics. Structural titanium is manufactured on an industrial scale from titaniumsponge. The ultra-low-background titanium sponge can be produced on an industrial scale witha contamination level of less than 1 mBq/kg of uranium and thorium isotopes. The pathways ofcontaminants during the industrial production of structural titanium were analyzed. The measurementswere carried out using two methods: inductively coupled plasma mass spectroscopy (ICP-MS)and gamma spectroscopy using high-purity germanium detectors (HPGes). It was shown that thelevel of contamination with radioactive impurities does not increase during the remelting of titaniumsponge and mechanical processing. We examined titanium alloy samples obtained at different stagesof titanium production, namely an electrode compaction, a vacuum arc remelting with a consumableelectrode, and a cold rolling of titanium sheets. We found out that all doped samples that werestudied would be a source of uranium and thorium contamination in the final titanium alloys. It hasbeen established that the only product allowed obtaining ultra-low-background titanium was thecommercial VT1-00 alloy, which is manufactured without master alloys addition. The master alloysin the titanium production process were found cause U/Th contamination.
Добавил в систему: Аветисов Игорь Христофорович

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The Study of Radioactive Contaminations within the Production Processes of Metal Titanium for Low-Background Experimentsстатья

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