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Polydisperse dust particles, respectively. Particles and at 11.5 +1.9 -1.3 and 11.7 +1.9 -1.3 cm s -1 for the larger aggregates composed of mono- and Happened at 12.7 +2.1 -1.4 cm s -1 for the smaller aggregates composed of monodisperse The transition from bouncing to sticking collisions The sticking probability of the sub-mm-sized dust aggregatesĬould be derived for velocities decreasing from ~22 to 3 cm s -1. Up to a few millimetres in size was observed. During the experimental run of 150 s under reduced gravityĬonditions, the sticking of aggregates and the formation and fragmentation of clusters of Particles prepared into aggregates with sizes around 120 μm and 330 μm, respectively and volumeįilling factors around 0.37. The protoplanetary dust analogue materials were micrometre-sized monodisperse and We performed an experiment on the REXUS 12 suborbital rocket. Threshold velocity between sticking and bouncing, their surface energy and tensile The collisional and sticking properties of sub-mm-sized aggregatesĬomposed of protoplanetary dust analogue material are measured, including the statistical With the aim of investigating the transitions between sticking andīouncing regimes for colliding dust aggregates and the formation of clusters from multipleĪggregates, the Suborbital Particle and Aggregation Experiment (SPACE) was flown on theĪims. Their sizes and relative velocities are high enough for collisions to result in bouncing Interactions with the surrounding gas, lead to sticking. In this disk, collisions between the dust particles, induced by
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System, dust agglomerates grow inside the protoplanetary disk that rotates around the
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In the very first steps of the formation of a new planetary Blum 1Įxtraterrestrische Physik, Technische UniversitätĮ-mail: Max Planck Institute for Solar SystemĬontext. Astronomical objects: linking to databases.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes