Sequestration of noble gases in giant planet interiors

Details Sequestration of noble gases in giant planet interiors Sequestration of noble gases in giant planet interiors

2010-03-30

arxiv.org/abs/1003.5940v1

Phys.Rev.Lett.104:121101,2010

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Scientific paper

10.1103/PhysRevLett.104.121101

The Galileo probe showed that Jupiter's atmosphere is severely depleted in neon compared to protosolar values. We show, via ab initio simulations of the partitioning of neon between hydrogen and helium phases, that the observed depletion can be explained by the sequestration of neon into helium-rich droplets within the postulated hydrogen-helium immiscibility layer of the planet's interior. We also demonstrate that this mechanism will not affect argon, explaining the observed lack of depletion of this gas. This provides strong indirect evidence for hydrogen-helium immiscibility in Jupiter.

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