Radiation chemistry of ices of plaetological interest at low temperature

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Carbon, Ice Formation, Interplanetary Medium, Interstellar Chemistry, Ionic Collisions, Radiation Chemistry, Astrophysics, Hydrocarbons, Infrared Spectroscopy, Methyl Alcohol, Raman Spectroscopy

Scientific paper

We present the results of recent experiments on some physio-chemical effects induced by fast ions colliding with solids of relevance for the physics of planetary objects. The production of molecular solids, polymer-like materials and amorphous carbon by irradiation of frozen hydrocarbons and pentacene is discussed. We also report on a set of experimental results obtained irradiating methanol and water-methanol mixtures. Because of bombardment, different species form. The techniques used for the analysis are 'in situ' infrared (IR) and Raman spectroscopy. The experimental results are finally discussed in the light of their relevance for planetary physics.

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