# Accurate Determination of the Absolute 3He/4He Ratio of a Synthesized Helium Standard Gas (Helium Standard of Japan, HESJ): Toward Revision of the Atmospheric 3He/4He Ratio

@article{Mishima2018AccurateDO,
title={Accurate Determination of the Absolute 3He/4He Ratio of a Synthesized Helium Standard Gas (Helium Standard of Japan, HESJ): Toward Revision of the Atmospheric 3He/4He Ratio},
author={Kenji Mishima and Hirochika Sumino and Takahito Yamada and Sei Ieki and Naoki Nagakura and Hidetoshi Otono and Hideyuki Oide},
journal={Geochemistry},
year={2018},
volume={19},
pages={3995 - 4005}
}
• Published 22 April 2018
• Physics
• Geochemistry
The helium standard of Japan, referred to as HESJ, is an interlaboratory standard for the 3He/4He ratio. While the ratio of 3He and 4He of the HESJ was previously determined by a relative comparison to atmospheric helium, the absolute value of the 3He/4He ratio of the HESJ has not been directly determined yet. Therefore, it relies on the early measurements of that of atmospheric helium. The accuracy of the absolute 3He/4He ratios of the atmosphere and other working standards including HESJ is…

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