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Title: Interactions of magnetized plasma flows in pulsed-power driven experiments

Abstract

A supersonic flow of magnetized plasma is produced by the application of a 1 MA-peak, 500 ns current pulse to a cylindrical arrangement of parallel wires, known as an inverse wire array. The plasma flow is produced by the J x B acceleration of the ablated wire material, and a magnetic field of several Tesla is embedded at source by the driving current. This setup has been used for a variety of experiments investigating the interactions of magnetized plasma flows. In experiments designed to investigate magnetic reconnection, the collision of counter-streaming flows, carrying oppositely directed magnetic fields, leads to the formation of a reconnection layer in which we observe ions reaching temperatures much greater than predicted by classical heating mechanisms. The breakup of this layer under the plasmoid instability is dependent on the properties of the inflowing plasma, which can be controlled by the choice of the wire array material. In other experiments, magnetized shocks were formed by placing obstacles in the path of the magnetized plasma flow. The pile-up of magnetic flux in front of a conducting obstacle produces a magnetic precursor acting on upstream electrons at the distance of the ion inertial length. This precursor subsequently develops intomore » a steep density transition via ion-electron fluid decoupling. Obstacles which possess a strong private magnetic field affect the upstream flow over a much greater distance, providing an extended bow shock structure. Finally, in the region surrounding the obstacle the magnetic pressure holds off the flow, forming a void of plasma material, analogous to the magnetopause around planetary bodies with self-generated magnetic fields.« less

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [1];  [1];  [1];  [2];  [3];  [4];  [5];  [1]
  1. Imperial College, London (United Kingdom). Blackett Lab.
  2. Univ. Paris Sciences et Lettres (PSL) (France). Sorbonne Univ., Observatorie de Paris
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  4. Northwest Inst. of Nuclear Technology, Xi'an (China)
  5. Univ. of Rochester, NY (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1574793
Grant/Contract Number:  
NA0003764
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Name: Plasma Physics and Controlled Fusion; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Country of Publication:
United States
Language:
English

Citation Formats

Suttle, Lee George, Burdiak, Guy C., Cheung, Chung L., Clayson, Thomas, Halliday, Jack W. D., Hare, Jack D., Rusli, Sonja, Russell, Daniel, Tubman, Eleanor, Ciardi, Andrea, Loureiro, Nuno F., Li, Jiawei, Frank, Adam, and Lebedev, Sergey V. Interactions of magnetized plasma flows in pulsed-power driven experiments. United States: N. p., 2019. Web. doi:10.1088/1361-6587/ab5296.
Suttle, Lee George, Burdiak, Guy C., Cheung, Chung L., Clayson, Thomas, Halliday, Jack W. D., Hare, Jack D., Rusli, Sonja, Russell, Daniel, Tubman, Eleanor, Ciardi, Andrea, Loureiro, Nuno F., Li, Jiawei, Frank, Adam, & Lebedev, Sergey V. Interactions of magnetized plasma flows in pulsed-power driven experiments. United States. doi:10.1088/1361-6587/ab5296.
Suttle, Lee George, Burdiak, Guy C., Cheung, Chung L., Clayson, Thomas, Halliday, Jack W. D., Hare, Jack D., Rusli, Sonja, Russell, Daniel, Tubman, Eleanor, Ciardi, Andrea, Loureiro, Nuno F., Li, Jiawei, Frank, Adam, and Lebedev, Sergey V. Wed . "Interactions of magnetized plasma flows in pulsed-power driven experiments". United States. doi:10.1088/1361-6587/ab5296.
@article{osti_1574793,
title = {Interactions of magnetized plasma flows in pulsed-power driven experiments},
author = {Suttle, Lee George and Burdiak, Guy C. and Cheung, Chung L. and Clayson, Thomas and Halliday, Jack W. D. and Hare, Jack D. and Rusli, Sonja and Russell, Daniel and Tubman, Eleanor and Ciardi, Andrea and Loureiro, Nuno F. and Li, Jiawei and Frank, Adam and Lebedev, Sergey V.},
abstractNote = {A supersonic flow of magnetized plasma is produced by the application of a 1 MA-peak, 500 ns current pulse to a cylindrical arrangement of parallel wires, known as an inverse wire array. The plasma flow is produced by the J x B acceleration of the ablated wire material, and a magnetic field of several Tesla is embedded at source by the driving current. This setup has been used for a variety of experiments investigating the interactions of magnetized plasma flows. In experiments designed to investigate magnetic reconnection, the collision of counter-streaming flows, carrying oppositely directed magnetic fields, leads to the formation of a reconnection layer in which we observe ions reaching temperatures much greater than predicted by classical heating mechanisms. The breakup of this layer under the plasmoid instability is dependent on the properties of the inflowing plasma, which can be controlled by the choice of the wire array material. In other experiments, magnetized shocks were formed by placing obstacles in the path of the magnetized plasma flow. The pile-up of magnetic flux in front of a conducting obstacle produces a magnetic precursor acting on upstream electrons at the distance of the ion inertial length. This precursor subsequently develops into a steep density transition via ion-electron fluid decoupling. Obstacles which possess a strong private magnetic field affect the upstream flow over a much greater distance, providing an extended bow shock structure. Finally, in the region surrounding the obstacle the magnetic pressure holds off the flow, forming a void of plasma material, analogous to the magnetopause around planetary bodies with self-generated magnetic fields.},
doi = {10.1088/1361-6587/ab5296},
journal = {Plasma Physics and Controlled Fusion},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

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This content will become publicly available on October 30, 2020
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