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Evolution of macroscopic dust agglomerates – Implications for planetesimal growth

Published online by Cambridge University Press:  13 February 2013

J. Teiser ,
I. Engelhardt ,
M. Küpper  and
G. Wurm
J. Teiser
Affiliation:
Fakultät für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47048 Duisburg, Germany
I. Engelhardt
Affiliation:
Fakultät für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47048 Duisburg, Germany
M. Küpper
Affiliation:
Fakultät für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47048 Duisburg, Germany
G. Wurm
Affiliation:
Fakultät für Physik, Universität Duisburg-Essen, Lotharstr. 1, 47048 Duisburg, Germany

Abstract

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The formation of preplanetary bodies is studied in laboratory experiments, especially the growth of decimeter bodies. As these macroscopic bodies are the building blocks for many growth models, it is very important to investigate possible formation processes and the mechanical properties of large dust agglomerates. Here, experimental results on the properties of decimeter-sized dust agglomerates and results of impact experiments at large collision velocities are presented. Fragmentation is a key process to growth at high velocities as energy is dissipated. Growth is observed for velocities up to 56 m/s and impact angles of up to 45°.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 58: ECLA - European Conference on Laboratory Astrophysics , 2012 , pp. 213 - 217
Copyright
© The Author(s) 2013

References

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