The 3He/4He ratio of 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

Research output: Contribution to journalArticlepeer-review

188 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)191-195
Number of pages5
Issue number2
Publication statusPublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology


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