Measurements of short-lived cosmogenic nuclides in rain samples

K. Komura; K. Komura; Y. Kuwahara; Y. Kuwahara; T. Abe; T. Abe; K. Tanaka; K. Tanaka; Y. Murata; Y. Murata; M. Inoue; M. Inoue

doi:10.1007/s10967-006-0298-z

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 269: Issue 2

Measurements of short-lived cosmogenic nuclides in rain samples

Authors:

K. Komura

K. Komura Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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K. Komura

Y. Kuwahara

Y. Kuwahara Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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Y. Kuwahara

T. Abe

T. Abe Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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T. Abe

K. Tanaka

K. Tanaka Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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K. Tanaka

Y. Murata

Y. Murata Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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Y. Murata

M. Inoue

M. Inoue Low Level Radioactivity Laboratory, K-INET, Kanazawa University Wake, Tatsunokuchi-machi, Nomi-gum, Ishikawa 923-1224, Japan

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M. Inoue

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Pages:: 511–516

Online Publication Date:: 18 Oct 2006

Publication Date:: 17 Aug 2006

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-006-0298-z

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Summary

Extremely low activity levels of cosmic ray induced nuclides have been measured in freshly precipitated rainwater by quick chemical separation coupled with ultra low background gamma-spectrometry. The nuclides detected were ³⁸S (T_1/2 = 2.83 h)-³⁸Cl (37.2 m), ³⁹Cl (55.6 m), ²⁴Na (14.96 h), ²⁸Mg (20.9 h), ⁷Be (53.3 d) and ²²Na (2.602 y). The number of atoms in rain water were evaluated to be ranging from 400-1900 l^-1 for ³⁹Cl (n = 6, mean: 1200), 30-1500 l^-1 for ²⁴Na (n = 16, mean: 520), 80-600 l^-1 for ²⁸Mg (n = 13, mean: 260), 1^. 10⁶-4^. 10⁷ l^-1 for 7Be (n = 16, mean: 7^. 10⁶) and 2^. 10³-1^. 10⁵ l^-1 for ²²Na (n = 9, mean: 2^. 10⁴). Measurements of activity levels and activity ratios of short-lived cosmic-ray induced short-lived nuclides will open new method to understand atmospheric processes occurred at the altitude of rain cloud.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)