The 3He/4He ratio of the new internal He Standard of Japan (HESJ)

J. Matsuda; T. Matsumoto; H. Sumino; K. Nagao; J. Yamamoto; Y. Miura; I. Kaneoka; N. Takahata; Y. Sano

doi:10.2343/geochemj.36.191

The ³He/⁴He ratio of the new internal He Standard of Japan (HESJ)

J. Matsuda, T. Matsumoto, H. Sumino, K. Nagao, J. Yamamoto, Y. Miura, I. Kaneoka, N. Takahata, Y. Sano

Author information

J. Matsuda
Department of Earth and Space Science, Graduate School of Science, Osaka University
T. Matsumoto
Department of Earth and Space Science, Graduate School of Science, Osaka University
H. Sumino
Laboratory for Earthquake Chemistry, Graduate School of Science, The University of Tokyo
K. Nagao
Laboratory for Earthquake Chemistry, Graduate School of Science, The University of Tokyo
J. Yamamoto
Earthquake Research Institute, The University of Tokyo
Y. Miura
Earthquake Research Institute, The University of Tokyo
I. Kaneoka
Earthquake Research Institute, The University of Tokyo
N. Takahata
Department of Earth and Planetary Sciences, Faculty of Science, Hiroshima University
Y. Sano
Department of Earth and Planetary Sciences, Faculty of Science, Hiroshima University

JOURNAL FREE ACCESS

2002 Volume 36 Issue 2 Pages 191-195

DOI https://doi.org/10.2343/geochemj.36.191

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Abstract

We have prepared an artificial mixture of ³He and ⁴He to be used as an internal standard for precise ³He/⁴He measurements of terrestrial mantle-derived samples. The mixture is named HESJ (He Standard of Japan). The ³He/⁴He ratio of HESJ was determined by obtaining the weighted average of repeated analyses from five machines in four laboratories in Japan. The recommended value of the ³He/⁴He ratio of HESJ relative to the air value (R/Ra) is 20.63 ± 0.10. HESJ is available to all researchers.

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