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Reduction of the radioactivity in sodium iodide (NaI) powder by recrystallization method

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Title
Reduction of the radioactivity in sodium iodide (NaI) powder by recrystallization method
Author(s)
Keonah Shin; Olga Gileva; Yeongduk Kim; Hyun Su Lee; Park, H
Publication Date
2018-09
Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, v.317, no.3, pp.1329 - 1332
Publisher
SPRINGER
Abstract
The COSINE experiment is searching for dark matter using ultra-low background NaI scintillating crystals. In order to reduce the internal contamination of the initial NaI powder to grow NaI crystals, NaI powder samples with different purities were purified by fractional recrystallization using de-ionized water. The concentrations of the main radioactive elements, K, Pb, Th, and U, which are major backgrounds for the dark matter search, were reduced to the level required for the experiment. Further, the concentrations of other impurities, e.g., Ba, Ca, Cr, and Fe, were also reduced, which is important to realize good quality NaI crystals. c.Akade´miai Kiado´ , Budapest, Hungary 2018
URI
https://pr.ibs.re.kr/handle/8788114/6951
ISSN
0236-5731
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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