skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4920959· OSTI ID:22410407
; ; ; ; ; ; ; ;  [1]; ;  [2]; ;  [3]; ;  [4];  [5];  [6]; ;  [7];
  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)

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.

OSTI ID:
22410407
Journal Information:
Physics of Plasmas, Vol. 22, Issue 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English

Cited By (14)

Growth and propagation of self-generated magnetic dipole vortices in collisionless shocks produced by interpenetrating plasmas journal January 2018
Scaling laws for dynamical plasma phenomena journal October 2018
Observation of collisionless-to-collisional transition in colliding plasma jets with optical Thomson scattering journal January 2019
Characterizing filamentary magnetic structures in counter-streaming plasmas by Fourier analysis of proton images journal October 2019
MPRAD: A Monte Carlo and ray-tracing code for the proton radiography in high-energy-density plasma experiments journal December 2019
Developed turbulence and nonlinear amplification of magnetic fields in laboratory and astrophysical plasmas journal June 2015
Distinguishing and diagnosing the spontaneous electric and magnetic fields of Weibel instability through proton radiography journal December 2019
Probing thermal Weibel instability in optical-field-ionized plasmas using relativistic electron bunches journal January 2020
Machine learning applied to proton radiography of high-energy-density plasmas journal April 2017
Electron Surfing and Drift Accelerations in a Weibel-Dominated High-Mach-Number Shock journal September 2017
Status of NIF laser and high power laser research at LLNL conference February 2017
Precursor Wave Emission Enhanced by Weibel Instability in Relativistic Shocks journal May 2018
Evolution of Three-dimensional Relativistic Ion Weibel Instability: Competition with Kink Instability journal June 2019
Characterizing filamentary magnetic structures in counter-streaming plasmas by Fourier analysis of proton images text January 2019