Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

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

Marina Zykova
,
Elena Voronina
,
Alexander Chepurnov
* ORCID logo ,
Maria Kornilova
,
Alexey Tankeev
,
Sergey Vlasov
,
Alexander Chub
,
Albert Gangapshev
,
Ali Gezhaev
,
Dzhamilya Tekueva
,
Igor Avetisov
*
Version 1 : Received: 27 December 2023 / Approved: 29 December 2023 / Online: 29 December 2023 (02:38:57 CET)

A peer-reviewed article of this Preprint also exists.

Zykova, M.; Voronina, E.; Chepurnov, A.; Leder, M.; Kornilova, M.; Tankeev, A.; Vlasov, S.; Chub, A.; Gangapshev, A.; Gezhaev, A.; Tekueva, D.; Avetisov, I. The Study of Radioactive Contaminations within the Production Processes of Metal Titanium for Low-Background Experiments. Materials 2024, 17, 832. Zykova, M.; Voronina, E.; Chepurnov, A.; Leder, M.; Kornilova, M.; Tankeev, A.; Vlasov, S.; Chub, A.; Gangapshev, A.; Gezhaev, A.; Tekueva, D.; Avetisov, I. The Study of Radioactive Contaminations within the Production Processes of Metal Titanium for Low-Background Experiments. Materials 2024, 17, 832.

Abstract

Ultra-low radioactive titanium alloy is a promising material for the manufacture of low-background detectors, which are being developed for experiments in astroparticle physics and neutrino astrophysics. Structural titanium is manufactured on an industrial scale from titanium-sponge. The ultra-low-background titanium-sponge can be produced on an industrial scale with a contamination level of less than 1 mBq/kg of uranium and thorium isotopes. The pathways of contaminants during the industrial production of structural titanium have been analyzed. The measurements have been carried out using two methods: inductively coupled plasma spectroscopy (ICP-MS) and gamma-spectroscopy using high-purity germanium detectors (HPGe). It has been shown that the level of contamination with radioactive impurities does not increase during remelting of titanium-sponge and mechanical processing. We examined titanium-alloys samples obtained at different stages of titanium production, namely, an electrode compaction, a vacuum arc remelting with a consumable electrode (VAR), and a cold rolling of titanium-sheets. It has been found out that all studied samples will be a source of uranium and thorium contamination of the final titanium-alloys. It has been established that the only product allowed obtaining ultra-low-background titanium was the VT1-00 which is manufactured without master alloys addition..

Keywords

titanium-sponge; structural titanium; pure substance; mass spectrometry with inductively coupled plasma; gamma-spectroscopy with high-purity germanium detectors

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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