The Helium Mass Fraction in Jupiter's Atmosphere

Details The Helium Mass Fraction in Jupiter's Atmosphere The Helium Mass Fraction in Jupiter's Atmosphere

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sci...272..849v&link_type=abstract

Science, Volume 272, Issue 5263, pp. 849-851

Physics

44

Scientific paper

On 7 December 1995, the NASA Galileo probe provided in situ measurements of the helium abundance in the atmosphere of Jupiter. A Jamin interferometer measured the refractive index of the jovian atmosphere in the pressure region from 2 to 14 bars. These measurements indicate that the atmospheric helium mole fraction is 0.136 ± 0.004. The corresponding helium mass fraction is slightly below the presolar value, which suggests that separation of helium from hydrogen in Jupiter's interior is only in its early stages.

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