High-temperature dust collision experiment

Coagulation experiments shall be extended to temperatures in the range 300-1,300 K and to mineral phases (forsterite, enstatite, FeNi metal, Ca,Al minerals, Fe sulfides, and Fe-bearing olivine/pyroxene) that are expected from theoretical and observational (both astrophysical and cosmochemical) constraints in protoplanetary disks. In particular, the collision and adhesion behavior at high temperatures and dust/gas ratios (sintering, eutectic melting between immiscible phases) could be a key mechanism to trigger agglomerate growth beyond previously established critical sizes (~ dm) and collision velocities (a few m/s). In addition to that, the importance of sintering for sticking at high collision velocities shall be investigated.

Principle Investigators

Prof. Dr. Jürgen Blum
PD Dr. Mario Trieloff