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Collisionless Shocks Driven by Supersonic Plasma Flows with Self-Generated Magnetic Fields

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [6];  [7];  [3];  [7];  [7];  [3];  [7];  [8];  [9];  [7];  [3];  [9];  [10] more »;  [3] « less
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); DOE/OSTI
  2. Univ. of Bordeaux, Talence (France); Czech Academy of Sciences, Brezany (Czech Republic)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Univ. of Bordeaux, Talence (France)
  5. National Research Nuclear Univ. MEPhI, Moscow (Russia); Russian Academy of Sciences, Moscow (Russia)
  6. Univ. di Roma “La Sapienza,” (Italy)
  7. Univ. of Rochester, NY (United States)
  8. École Polytechnique, Palaiseau (France)
  9. Osaka Univ. (Japan)
  10. Univ. of California San Diego, La Jolla, CA (United States)
Collisionless shocks are ubiquitous in the Universe as a consequence of supersonic plasma flows sweeping through interstellar and intergalactic media. These shocks are the cause of many observed astrophysical phenomena, but details of shock structure and behavior remain controversial because of the lack of ways to study them experimentally. Laboratory experiments reported here, with astrophysically relevant plasma parameters, demonstrate for the first time the formation of a quasiperpendicular magnetized collisionless shock. In the upstream it is fringed by a filamented turbulent region, a rudiment for a secondary Weibel-driven shock. Furthermore, this turbulent structure is found responsible for electron acceleration to energies exceeding the average energy by two orders of magnitude.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003539
OSTI ID:
1614557
Alternate ID(s):
OSTI ID: 1545447
OSTI ID: 23079202
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 123; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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