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Deducing Lunar Regolith Porosity From Energetic Neutral Atom Emission

Wurz, P.; Galli, A.; Jäggi, N. +6 more

The porosity of the upper layers of regolith is key to the interaction of an airless planetary body with precipitating radiation, but it remains difficult to characterize. One of the effects that is governed by regolith properties is Energetic Neutral Atom (ENA) emission in the form of reflected and neutralized solar wind protons. We simulate this…