Low velocity dust-dust collisions

Details Low velocity dust-dust collisions Low velocity dust-dust collisions

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.302..173b&link_type=abstract

In ESA, Physics and Mechanics of Cometary Materials p 173-175 (SEE N90-19989 12-90)

Physics

Coagulation, Dust, Experimentation, Particle Collisions, Protoplanets, Agglomeration, Glass, Low Speed, Organic Compounds, Planetary Mantles

Scientific paper

An experimental setup was developed to investigate collisional processes between protoplanetary and/or protocometary particles. The relative velocities of the order-of-mm-sized particles can be varied from approx. 10 cm/s to approximately 10 m/s. The first experiments were performed with fluffy agglomerates of particles each consisting of a glass core and an organic mantle (n-pentacosane) at relative velocities around 1.2 m/s. No sticking of the collided agglomerates was observed for relative amounts of n-pentacosane lower than or equal to 17 weight percent, whereas sticking was observed for relative amounts of organic material greater than or equal to 22 weight percent. The coagulation probability increases with increasing proportion of n-pentacosane.

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