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Per atom muon capture ratios and effects of molecular structure on muon capture by γ-Fe2O3 and Fe3O4

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Abstract

An elemental analysis method utilizing muons has been demonstrated to be effective for non-destructive and quantitative analysis of precious bulk materials. In muon capture process, molecular structure dependence was known, and this property has the potential to be used to identify chemical structure in addition to elemental composition. Before these potential applications, fundamental studies examining the muon capture process are necessary. In this study, muon capture ratios for two iron oxide compounds, which are both important in earth science, γ-Fe2O3 (maghemite) and Fe3O4 (magnetite), were measured. The measured muon capture ratios were A(Fe/O) = 2.34 ± 0.03 and A(Fe/O) = 2.77 ± 0.03 for γ-Fe2O3 and Fe3O4, respectively.

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Acknowledgements

This research was supported by the Grant-in-Aid for Scientific Research C (18K11922) and Grant-in-Aid for Scientific Research on Innovative Areas (18H05457). The muon beam experiment at the MuSIC-M1 beamline in RCNP was conducted as E529 experiment in RCNP proposal number.

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Authors and Affiliations

  1. Graduate School of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan

    Kazuhiko Ninomiya, Meito Kajino, Makoto Inagaki, Kentaro Terada, Akira Sato & Atsushi Shinohara

  2. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Sennan-gun, Osaka, 590-0494, Japan

    Makoto Inagaki

  3. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka, 567-0047, Japan

    Dai Tomono & Yoshitaka Kawashima

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  1. Kazuhiko Ninomiya
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  2. Meito Kajino
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  3. Makoto Inagaki
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  4. Kentaro Terada
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  5. Akira Sato
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  7. Yoshitaka Kawashima
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  8. Atsushi Shinohara
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Correspondence to Kazuhiko Ninomiya.

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Ninomiya, K., Kajino, M., Inagaki, M. et al. Per atom muon capture ratios and effects of molecular structure on muon capture by γ-Fe2O3 and Fe3O4. J Radioanal Nucl Chem 324, 403–408 (2020). https://doi.org/10.1007/s10967-020-07065-0

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