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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CITATION STYLE
Matsuda, J., Matsumoto, T., Sumino, H., Nagao, K., Yamamoto, J., Miura, Y., … Sano, Y. (2002). The 3He/4He ratio of new internal He Standard of Japan (HESJ). Geochemical Journal, 36(2), 191–195. https://doi.org/10.2343/geochemj.36.191
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