Rapid Analysis of $\mathrm{^{226}Ra}$ in Ultrapure Gadolinium Sulfate Octahydrate

التفاصيل البيبلوغرافية
العنوان: Rapid Analysis of $\mathrm{^{226}Ra}$ in Ultrapure Gadolinium Sulfate Octahydrate
المؤلفون: Sakakieda, Y., Hosokawa, K., Nakanishi, F., Hino, Y., Inome, Y., Sakaguchi, A., Takaku, Y., Ikeda, M., Sekiya, H.
سنة النشر: 2023
المجموعة: Physics (Other)
مصطلحات موضوعية: Physics - Instrumentation and Detectors
الوصف: Numerous particle physics experiments utilize gadolinium (Gd), a rare earth element with the most significant neutron capture cross-section among all elements, to detect anti-neutrinos via inverse beta-decays or to remove neutron-induced background events. For example, to load Gd into water Cherenkov detectors, $\mathrm{{Gd_{2}(SO_{4})_{3}\cdot 8H_{2}O}}$ is dissolved and rare event search experiments are required to screen for radioactive impurities in $\mathrm{{Gd_{2}(SO_{4})_{3}\cdot 8H_{2}O}}$ before dissolution. This study developed a new method to rapidly measure the radium-226($\mathrm{^{226}Ra}$) concentration in $\mathrm{{Gd_{2}(SO_{4})_{3}\cdot 8H_{2}O}}$. This method requires only three days to measure a batch of samples, as opposed to the usual method using high-purity germanium detectors, which takes approximately 20 days after arrival. The detection limit for the measurement of $\mathrm{^{226}Ra}$ is 0.32 mBq/kg. This method has been already used for $\mathrm{{Gd_{2}(SO_{4})_{3}\cdot 8H_{2}O}}$ screening at the Super-Kamiokande Gd(SK-Gd) project, and it can be applied to future experiments.
Comment: 10 pages, 3 figures
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2306.06926
رقم الأكسشن: edsarx.2306.06926
قاعدة البيانات: arXiv