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Journal Articles

Frontiers of studies utilizing accelerator mass spectrometry in geoscience

Honda, Maki

Journal of the Mass Spectrometry Society of Japan, 70(4), p.282 - 283, 2022/12

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

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.

Journal Articles

Study of Electron Impact Ionization Cross-sections of Sodium-containing Molecules

Huang, J.; Furukawa, Tomohiro; Aoto, Kazumi; Yamawaki, Michio*

Journal of the Mass Spectrometry Society of Japan, 50(6), p.296 - 300, 2002/00

https://doi.org/10.5702/massspec.50.296

None

Journal Articles

Ammoniated ammonium ions studied theoretically and experimentally, ab initio calculation and tandem mass spectrometer experiments

Ikezoe, Yasumasa; Suzuki, Kazuya

Journal of the Mass Spectrometry Society of Japan, 48(4), p.254 - 262, 2000/04

https://doi.org/10.5702/massspec.48.254

no abstracts in English

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