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- W2068741514 abstract "We present experimental results on some physical properties of thick organic residues obtained by bombarding frozen methane with 1.5 MeV protons. After proton fluences of ∼1E + 16 protons cm−2 the synthesized layers appear to be amorphous and fluffy, and to have low density. Their IR transmission spectrum (2.5–10 μm) is typical of long-chain polymerlike substances. At higher fluences (∼1E + 17 protons cm−2) the residues evolve into a carbonlike dark material, the density as well as the stoichiometric ratio C:H increases and the IR features are decreased in strengths. Their reflectance spectrum (0.6−2.5 μm) resembles that of charcoal. We suggest that the new materials can be present on/in the surfaces of the Uranian satellites, of Hyperion, and the dark side of lapetus. We show in fact that they could be synthesized in large quantities during the T Tau phase of the Sun when a copious emission of mega-electronvolt protons is plausible. This assumes that Saturnian and Uranian satellites were partially methane covered in the first evolutive stage of the Solar System." @default.
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- W2068741514 date "1985-07-01" @default.
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- W2068741514 title "Fluffy layers obtained by ion bombardment of frozen methane: Experiments and applications to Saturnian and Uranian satellites" @default.
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- W2068741514 doi "https://doi.org/10.1016/0019-1035(85)90018-1" @default.
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