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Journal Article

Magnetically heated granular gas in a low-gravity environment


Schröter,  Matthias
Group Statistical mechanics of granular media, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Yu, P., Schröter, M., Adachi, M., & Sperl, M. (2021). Magnetically heated granular gas in a low-gravity environment. EPJ Web of Conferences, 249: 04002. doi:10.1051/epjconf/202124904002.

Cite as: https://hdl.handle.net/21.11116/0000-0008-AB94-0
Magnetic forces are used to heat up thousands of spherical particles under low-gravity. This long
range external excitation, combined with the induced particle-particle interactions, results in a homogeneous
spatial distribution of the particles. Comparisons with predictions of kinetic theories can hence be carried out.
Haff’s cooling law is verified qualitatively, while the measured cooling time scale is quantitatively different
from the prediction. The high velocity tail of the velocity distribution during homogeneous cooling state (HCS)
is measured, while the expected cluster formation after HCS can not be verified by our experiment.