https://doi.org/10.1051/epjconf/202124904002
Magnetically heated granular gas in a low-gravity environment
1
Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft-und Raumfahrt (DLR), 51170 Cologne, Germany
2
Institut für Theoretische Physik, Universität zu Köln, 50937 Cologne, Germany
3
Max-Planck-Institut für Dynamik und Selbstorganisation, 37077, Göttingen, Germany
4
Hypatia Science Consulting, 37081, Göttingen, Germany
* e-mail: peidong.yu@dlr.de
** e-mail: schroeter@science-consulting.info
*** e-mail: masato.adachi@dlr.de
**** e-mail: matthias.sperl@dlr.de
Published online: 7 June 2021
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.
A video is available at https://doi.org/10.48448/3tw5-d751
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
