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

Abstract 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 dire...

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Bibliographic Details

Published in:	Geochemistry, Geophysics, Geosystems
Main Authors:	Kenji Mishima, Hirochika Sumino, Takahito Yamada, Sei Ieki, Naoki Nagakura, Hidetoshi Otono, Hideyuki Oide
Format:	Article
Language:	English
Published:	Wiley 2018-10-01
Subjects:	helium isotopes noble gas mass spectrometry helium standard of Japan atmospheric 3He/4He ratio neutron lifetime measurement
Online Access:	https://doi.org/10.1029/2018GC007554