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Frontiers of studies utilizing accelerator mass spectrometry in geoscience

Honda, Maki   

The development of measurement and chemical separation techniques in the accelerator mass spectrometry (AMS) method has enabled highly sensitive analysis of $$^{244}$$Pu (half-life 8.1$$times$$10$$^{7}$$ years), $$^{60}$$Fe (half-life 2.62$$times$$10$$^{6}$$ years), and $$^{90}$$Sr (half-life 28.9 years) in AMS. For example, the study analyzing $$^{244}$$Pu in ferromanganese crust samples successfully quantified $$^{244}$$Pu from outside the solar system, which had been hidden by $$^{244}$$Pu from nuclear tests. Furthermore, the research has revealed that $$^{244}$$Pu is produced in neutron star mergers, etc., leading to unraveling the production sites where the heavy elements originate. This topic highlights the frontline of studies on $$^{244}$$Pu, $$^{60}$$Fe, and $$^{90}$$Sr utilizing AMS.

Language

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Japanese

Journal

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Journal of the Mass Spectrometry Society of Japan

Volume

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70

Number

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4

Pages

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p.282 - 283

Publication Year/Month

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2022/12

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.5702/massspec.S22-77

DOI for research data

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Link to research data related to this paper/report.

Keywords

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加速器質量分析; 同重体; $$^{60}$$Fe; $$^{244}$$Pu; $$^{90}$$Sr

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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