Authors:
S. Sekimoto Kyoto University Research Reactor Institute Kumatori-cho, Sennan-gun Osaka 590-0494 Japan

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T. Kobayashi Nihon University College of Humanities and Sciences Sakurajosui, Setagaya-ku Tokyo 156-8550 Japan

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K. Takamiya Kyoto University Research Reactor Institute Kumatori-cho, Sennan-gun Osaka 590-0494 Japan

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M. Ebihara Tokyo Metropolitan University Department of Chemistry, Graduate School of Science Hachioji, Tokyo 192-0397 Japan

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S. Shibata Kyoto University Research Reactor Institute Kumatori-cho, Sennan-gun Osaka 590-0494 Japan

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Abstract  

Chemical composition of 15 magnetic spherules collected from deep sea sediment was determined by instrumental neutron activation analysis (INAA) under two different irradiation conditions using the Kyoto University Reactor (KUR). Based on their chemical composition, nine spherules were judged to be of extraterrestrial origin. The differences in the chemical composition of the nine spherules are discussed in terms of condensation temperatures for the elements. Comparing the detection limits derived from INAA under two different irradiation conditions, the sensitivity for INAA using KUR is discussed.

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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)