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Title: Magnetized Disruption of Inertially Confined Plasma Flows

Abstract

Herein, the creation and disruption of inertially collimated plasma flows are investigated through experiment, simulation, and analytical modeling. Supersonic plasma jets are generated by laser-irradiated plastic cones and characterized by optical interferometry measurements. Targets are magnetized with a tunable $B$ field with strengths of up to 5 T directed along the axis of jet propagation. These experiments demonstrate a hitherto unobserved phenomenon in the laboratory, the magnetic disruption of inertially confined plasma jets. This occurs due to flux compression on axis during jet formation and can be described using a Lagrangian-cylinder model of plasma evolution implementing finite resistivity. The basic physical mechanisms driving the dynamics of these systems are described by this model and then compared with two-dimensional radiation-magnetohydrodynamic simulations. Experimental, computational, and analytical results discussed herein suggest that contemporary models underestimate the electrical conductivity necessary to drive the amount of flux compression needed to explain observations of jet disruption.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [3];  [4];  [2];  [4];  [4];  [4];  [3]
  1. General Atomics, Inertial Fusion Technologies, San Diego, CA (United States)
  2. Univ. of Rochester, NY (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Aeronautic and Space Administration (NASA)
OSTI Identifier:
1601560
Alternate Identifier(s):
OSTI ID: 1524469
Report Number(s):
[LLNL-JRNL-789266]
[Journal ID: ISSN 0031-9007; PRLTAO; 981243]
Grant/Contract Number:  
[AC52-07NA27344; NA0001840; PF3-140111; NAS8-03060]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
[ Journal Volume: 122; Journal Issue: 22]; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Manuel, M. J. -E., Sefkow, A. B., Kuranz, C. C., Rasmus, A. M., Klein, S. R., MacDonald, M. J., Trantham, M. R., Fein, J. R., Belancourt, P. X., Young, R. P., Keiter, P. A., Pollock, B. B., Park, J., Hazi, A. U., Williams, G. J., Chen, H., and Drake, R. P. Magnetized Disruption of Inertially Confined Plasma Flows. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.225001.
Manuel, M. J. -E., Sefkow, A. B., Kuranz, C. C., Rasmus, A. M., Klein, S. R., MacDonald, M. J., Trantham, M. R., Fein, J. R., Belancourt, P. X., Young, R. P., Keiter, P. A., Pollock, B. B., Park, J., Hazi, A. U., Williams, G. J., Chen, H., & Drake, R. P. Magnetized Disruption of Inertially Confined Plasma Flows. United States. doi:10.1103/PhysRevLett.122.225001.
Manuel, M. J. -E., Sefkow, A. B., Kuranz, C. C., Rasmus, A. M., Klein, S. R., MacDonald, M. J., Trantham, M. R., Fein, J. R., Belancourt, P. X., Young, R. P., Keiter, P. A., Pollock, B. B., Park, J., Hazi, A. U., Williams, G. J., Chen, H., and Drake, R. P. Tue . "Magnetized Disruption of Inertially Confined Plasma Flows". United States. doi:10.1103/PhysRevLett.122.225001.
@article{osti_1601560,
title = {Magnetized Disruption of Inertially Confined Plasma Flows},
author = {Manuel, M. J. -E. and Sefkow, A. B. and Kuranz, C. C. and Rasmus, A. M. and Klein, S. R. and MacDonald, M. J. and Trantham, M. R. and Fein, J. R. and Belancourt, P. X. and Young, R. P. and Keiter, P. A. and Pollock, B. B. and Park, J. and Hazi, A. U. and Williams, G. J. and Chen, H. and Drake, R. P.},
abstractNote = {Herein, the creation and disruption of inertially collimated plasma flows are investigated through experiment, simulation, and analytical modeling. Supersonic plasma jets are generated by laser-irradiated plastic cones and characterized by optical interferometry measurements. Targets are magnetized with a tunable $B$ field with strengths of up to 5 T directed along the axis of jet propagation. These experiments demonstrate a hitherto unobserved phenomenon in the laboratory, the magnetic disruption of inertially confined plasma jets. This occurs due to flux compression on axis during jet formation and can be described using a Lagrangian-cylinder model of plasma evolution implementing finite resistivity. The basic physical mechanisms driving the dynamics of these systems are described by this model and then compared with two-dimensional radiation-magnetohydrodynamic simulations. Experimental, computational, and analytical results discussed herein suggest that contemporary models underestimate the electrical conductivity necessary to drive the amount of flux compression needed to explain observations of jet disruption.},
doi = {10.1103/PhysRevLett.122.225001},
journal = {Physical Review Letters},
number = [22],
volume = [122],
place = {United States},
year = {2019},
month = {6}
}

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