Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Application of transition-edge sensors for micro-X-ray fluorescence measurements and micro-X-ray absorption near edge structure spectroscopy: a case study of uranium speciation in biotite obtained from a uranium mine

Takumi Yomogida, T. Hashimoto, T. Okumura, S. Yamada, H. Tatsuno, Hirofumi Noda, R. Hayakawa, S. Okada, Sayuri Takatori, T. Isobe, T. Hiraki, Toshiki Sato, Yuichi Toyama, Yuto Ichinohe, Oki Sekizawa, Kiyofumi Nitta, Yuichi Kurihara, Shigeru Fukushima, Tomoya Uruga, Yoshihiro Kitatsuji, Yoshio Takahashi

The Analyst · 2024

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Summary

In this study, we successfully applied a transition-edge sensor (TES) spectrometer as a detector for microbeam X-ray measurements from a synchrotron X-ray light source in the hard X-ray region to determine uranium (U) distribution at the micro-scale and its chemical species in biotite obtained from a U mine. It is difficult to separate the fluorescent X-ray of the U Lα<sub>1</sub> line at 13.615 keV from that of the Rb Kα line at 13.395 keV in the X-ray fluorescence spectrum with an energy resolution of approximately 220 eV using a conventional silicon drift detector (SDD). Meanwhile, the fluorescent X-rays of U Lα<sub>1</sub> and Rb Kα were fully separated by a TES with 50 eV energy resolution at an energy of around 13 keV. The successful peak separation by the TES led to an accurate mapp

Source type
Peer-reviewed study
DOI
10.1039/d4an00059e
Catalogue ID
SNmoic23ve-sj2bho
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