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Title: Collisionless shock experiments with lasers and observation of Weibel instabilities

Abstract

Astrophysical collisionless shocks are common in the universe, occurring in supernova remnants, gamma ray bursts, and protostellar jets. They appear in colliding plasma flows when the mean free path for ion-ion collisions is much larger than the system size. It is believed that such shocks could be mediated via the electromagnetic Weibel instability in astrophysical environments without pre-existing magnetic fields. Here, we present laboratory experiments using high-power lasers and investigate the dynamics of high-Mach-number collisionless shock formation in two interpenetrating plasma streams. Our recent proton-probe experiments on Omega show the characteristic filamentary structures of the Weibel instability that are electromagnetic in nature with an inferred magnetization level as high as ∼1% [C. M. Huntington et al., “Observation of magnetic field generation via the weibel instability in interpenetrating plasma flows,” Nat. Phys. 11, 173–176 (2015)]. These results imply that electromagnetic instabilities are significant in the interaction of astrophysical conditions.

Authors:
; ; ; ; ; ; ; ; ;  [1]; ;  [2]; ;  [3]; ;  [4];  [5];  [6]; ;  [7] more »; « less
  1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  2. University of Michigan, Ann Arbor, Michigan 48109 (United States)
  3. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636 (United States)
  4. University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)
  5. LULI, Ecole Polytechnique, Palaiseau (France)
  6. Lam Research Corporation, Fremont, California 94538 (United States)
  7. University of Chicago, Chicago, California 94538 (United States)
Publication Date:
OSTI Identifier:
22410407
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ASTROPHYSICS; COSMIC GAMMA BURSTS; ION-ION COLLISIONS; LASERS; MACH NUMBER; MAGNETIC FIELDS; MAGNETIZATION; MEAN FREE PATH; OMEGA FACILITY; PLASMA INSTABILITY; PROTON PROBES; PROTOSTARS; SHOCK WAVES; SUPERNOVA REMNANTS

Citation Formats

Park, H.-S., E-mail: park1@llnl.gov, Huntington, C. M., Fiuza, F., Levy, M. C., Pollock, B. B., Remington, B. A., Ross, J. S., Ryutov, D. D., Turnbull, D. P., Weber, S. V., Drake, R. P., Kuranz, C. C., Froula, D. H., Rosenberg, M., Gregori, G., Meinecke, J., Koenig, M., Kugland, N. L., Lamb, D. Q., Tzeferacos, P., and and others. Collisionless shock experiments with lasers and observation of Weibel instabilities. United States: N. p., 2015. Web. doi:10.1063/1.4920959.
Park, H.-S., E-mail: park1@llnl.gov, Huntington, C. M., Fiuza, F., Levy, M. C., Pollock, B. B., Remington, B. A., Ross, J. S., Ryutov, D. D., Turnbull, D. P., Weber, S. V., Drake, R. P., Kuranz, C. C., Froula, D. H., Rosenberg, M., Gregori, G., Meinecke, J., Koenig, M., Kugland, N. L., Lamb, D. Q., Tzeferacos, P., & and others. Collisionless shock experiments with lasers and observation of Weibel instabilities. United States. doi:10.1063/1.4920959.
Park, H.-S., E-mail: park1@llnl.gov, Huntington, C. M., Fiuza, F., Levy, M. C., Pollock, B. B., Remington, B. A., Ross, J. S., Ryutov, D. D., Turnbull, D. P., Weber, S. V., Drake, R. P., Kuranz, C. C., Froula, D. H., Rosenberg, M., Gregori, G., Meinecke, J., Koenig, M., Kugland, N. L., Lamb, D. Q., Tzeferacos, P., and and others. Fri . "Collisionless shock experiments with lasers and observation of Weibel instabilities". United States. doi:10.1063/1.4920959.
@article{osti_22410407,
title = {Collisionless shock experiments with lasers and observation of Weibel instabilities},
author = {Park, H.-S., E-mail: park1@llnl.gov and Huntington, C. M. and Fiuza, F. and Levy, M. C. and Pollock, B. B. and Remington, B. A. and Ross, J. S. and Ryutov, D. D. and Turnbull, D. P. and Weber, S. V. and Drake, R. P. and Kuranz, C. C. and Froula, D. H. and Rosenberg, M. and Gregori, G. and Meinecke, J. and Koenig, M. and Kugland, N. L. and Lamb, D. Q. and Tzeferacos, P. and and others},
abstractNote = {Astrophysical collisionless shocks are common in the universe, occurring in supernova remnants, gamma ray bursts, and protostellar jets. They appear in colliding plasma flows when the mean free path for ion-ion collisions is much larger than the system size. It is believed that such shocks could be mediated via the electromagnetic Weibel instability in astrophysical environments without pre-existing magnetic fields. Here, we present laboratory experiments using high-power lasers and investigate the dynamics of high-Mach-number collisionless shock formation in two interpenetrating plasma streams. Our recent proton-probe experiments on Omega show the characteristic filamentary structures of the Weibel instability that are electromagnetic in nature with an inferred magnetization level as high as ∼1% [C. M. Huntington et al., “Observation of magnetic field generation via the weibel instability in interpenetrating plasma flows,” Nat. Phys. 11, 173–176 (2015)]. These results imply that electromagnetic instabilities are significant in the interaction of astrophysical conditions.},
doi = {10.1063/1.4920959},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 22,
place = {United States},
year = {2015},
month = {5}
}