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Micrometer-sized ice particles for planetary-science experiments - I. Preparation, critical rolling friction force, and specific surface energy

Abstract : ► Development of experimental procedures to produce micrometer-sized ice particles for planetary-science experiments. ► Investigation of the physical properties of micrometer-sized ice particles. ► Enhancement of the sample material, which is used in a comet-simulation experiment (see below). ► Planning of future collision experiments with micrometer-sized ice particles. ► Construction of a laboratory experiment to investigate the physical processes determining the actitvty of icy bodies in the solar system. ► Verification and calibration of theoretical models with experimental results. ► Investigation of the temperature dependent sublimation properties of hexagonal water ice and the gas diffusion through a dry dust layer covering the ice surface. ► Measurement of the reduction of the gas production rate due to an additional dust layer on top of the ice surface. ► Determination of the temperature dependence of the sublimation coefficient. ► Further investigations are planed, to measure the outgassing of ice-dust samples under irradiation. ► Development of a theoretical model, which describes the gas diffusion through dust layers
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B. Gundlach, S. Kilias, E. Beitz, J. Blum. Micrometer-sized ice particles for planetary-science experiments - I. Preparation, critical rolling friction force, and specific surface energy. Icarus, 2011, 214 (2), pp.717. ⟨10.1016/j.icarus.2011.05.005⟩. ⟨hal-00786876⟩

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