Effect of magnetic field on the phase transition in a dusty plasma
Abstract
The formation of a self-consistent crystalline structure is a well-known phenomenon in complex plasmas. In most experiments, the pressure and rf power are the main controlling parameters in determining the phase of the system. Here, we have studied the effect of the externally applied magnetic field on the configuration of plasma crystals, suspended in the sheath of a radio-frequency discharge using the Magnetized Dusty Plasma Experiment device. Experiments are performed at a fixed pressure and rf power where a crystalline structure is formed within a confining ring. The magnetic field is then increased from 0 to 1.28 T. We report on the breakdown of the crystalline structure with the increasing magnetic field. The magnetic field affects the dynamics of the plasma particles and first leads to a rotation of the crystal. At a higher magnetic field, there is a radial variation (shear) in the angular velocity of the moving particles which we believe to lead to the melting of the crystal. This melting is confirmed by evaluating the variation of the pair correlation function as a function of magnetic field.
- Authors:
-
- Deutsches Zentrum für Luft-und Raumfahrt (DLR), Weßling (Germany). Inst. für Materialphysik im Weltraum
- Auburn Univ., AL (United States). Allison Lab.
- Inst. for Plasma Research, Bhat, Gandhinagar (India)
- Publication Date:
- Research Org.:
- Auburn Univ., AL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1514859
- Alternate Identifier(s):
- OSTI ID: 1408069
- Grant/Contract Number:
- SC0010485; SC0016330
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 11; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Jaiswal, S., Hall, T., LeBlanc, S., Mukherjee, R., and Thomas, E. Effect of magnetic field on the phase transition in a dusty plasma. United States: N. p., 2017.
Web. doi:10.1063/1.5003972.
Jaiswal, S., Hall, T., LeBlanc, S., Mukherjee, R., & Thomas, E. Effect of magnetic field on the phase transition in a dusty plasma. United States. https://doi.org/10.1063/1.5003972
Jaiswal, S., Hall, T., LeBlanc, S., Mukherjee, R., and Thomas, E. Wed .
"Effect of magnetic field on the phase transition in a dusty plasma". United States. https://doi.org/10.1063/1.5003972. https://www.osti.gov/servlets/purl/1514859.
@article{osti_1514859,
title = {Effect of magnetic field on the phase transition in a dusty plasma},
author = {Jaiswal, S. and Hall, T. and LeBlanc, S. and Mukherjee, R. and Thomas, E.},
abstractNote = {The formation of a self-consistent crystalline structure is a well-known phenomenon in complex plasmas. In most experiments, the pressure and rf power are the main controlling parameters in determining the phase of the system. Here, we have studied the effect of the externally applied magnetic field on the configuration of plasma crystals, suspended in the sheath of a radio-frequency discharge using the Magnetized Dusty Plasma Experiment device. Experiments are performed at a fixed pressure and rf power where a crystalline structure is formed within a confining ring. The magnetic field is then increased from 0 to 1.28 T. We report on the breakdown of the crystalline structure with the increasing magnetic field. The magnetic field affects the dynamics of the plasma particles and first leads to a rotation of the crystal. At a higher magnetic field, there is a radial variation (shear) in the angular velocity of the moving particles which we believe to lead to the melting of the crystal. This melting is confirmed by evaluating the variation of the pair correlation function as a function of magnetic field.},
doi = {10.1063/1.5003972},
journal = {Physics of Plasmas},
number = 11,
volume = 24,
place = {United States},
year = {Wed Nov 08 00:00:00 EST 2017},
month = {Wed Nov 08 00:00:00 EST 2017}
}
Web of Science
Figures / Tables:
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Figures / Tables found in this record: