Experimental Studies on the Aggregation Properties of Ice and Dust in Planet-Forming Regions

Details Experimental Studies on the Aggregation Properties of Ice and Dust in Planet-Forming Regions Experimental Studies on the Aggregation Properties of Ice and Dust in Planet-Forming Regions

2011-06-23

arxiv.org/abs/1106.4760v1

Hei{\ss}elmann, D., Fraser, H., & Blum, J. 2007, Proc. 58th Int. Astronautical Congress 2007 (Paris: Int. Astronautical Federa

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Cite as Hei{\ss}elmann, D., Fraser, H., & Blum, J. 2007, Proc. 58th Int. Astronautical Congress 2007 (Paris: Int. Astronautica

Scientific paper

To reveal the formation of planetesimals it is of great importance to understand the collision behavior of the dusty and icy aggregates they have formed from. We present an experimental setup to investigate the aggregation properties in low-velocity collisions of dust aggregates, solid ices and icy aggregates under microgravity conditions. Results from ESA's 45th Parabolic Flight Campaign show that most collisions in the velocity range 0.1 m/s < v_c < 0.5m/s are dominated by a rebound behavior of the projectile dust aggregates and only ~ 5% of the translational kinetic energy is conserved after the encounters.

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