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Title: Enhancement of Quasistationary Shocks and Heating via Temporal Staging in a Magnetized Laser-Plasma Jet

Here, we investigate the formation of a laser-produced magnetized jet under conditions of a varying mass ejection rate and a varying divergence of the ejected plasma flow. This is done by irradiating a solid target placed in a 20 T magnetic field with, first, a collinear precursor laser pulse (10 12 W/cm 2) and, then, a main pulse (10 13 W/cm 2) arriving 9–19 ns later. Varying the time delay between the two pulses is found to control the divergence of the expanding plasma, which is shown to increase the strength of and heating in the conical shock that is responsible for jet collimation. These results show that plasma collimation due to shocks against a strong magnetic field can lead to stable, astrophysically relevant jets that are sustained over time scales 100 times the laser pulse duration (i.e., >70 ns), even in the case of strong variability at the source.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [3] ;  [8] ;  [9] ;  [6] ;  [10] ;  [8] ;  [4] ;  [11] ;  [12] ;  [13] ;  [14] ;  [8] ;  [7] more »;  [7] ;  [15] ;  [5] ;  [2] ;  [3] « less
  1. Ecole Polytechnique Univ. Paris-Saclay, Sorbonne Univ., Palaiseau Cedex (France); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Sorbonne Univ., Paris (France); PSL Research Univ., Paris (France)
  3. Ecole Polytechnique Univ. Paris-Saclay, Sorbonne Univ., Palaiseau Cedex (France); Institute of Applied Physics, Nizhny Novgorod (Russia)
  4. CNRS-UGA-UPS-INSA, Toulouse (France)
  5. Heinrich-Heine-Univ. Dusseldorf, Dusseldorf (Germany)
  6. Queen's Univ. Belfast, Belfast (United Kingdom)
  7. Institute of Applied Physics, Nizhny Novgorod (Russia)
  8. Joint Institute for High Temperatures, Moscow (Russia); National Research Nuclear Univ. "MEPhl", Moscow (Russia)
  9. GSI Helmholtzzentrum fur Schweionenforschung GmbH, Darmstadt (Germany)
  10. INRS-EMT, Varennes, QC (Canada)
  11. Sorbonne Univ.-UPMC Univ. Paris 06, Ecole Polytechnique, Paris (France)
  12. Ecole Polytechnique Univ. Paris-Saclay, Sorbonne Univ., Palaiseau Cedex (France); CEA, DAM, DIF, Arpajon (France)
  13. Dept. de Fisica de a Univ. de Las Palmas de Gran Canaria, Paris (France)
  14. Joint Institute for High Temperatures, Moscow (Russia); M.V. Lomonosov Moscow State Univ., Moscow (Russia)
  15. Ecole Polytechnique Univ. Paris-Saclay, Sorbonne Univ., Palaiseau Cedex (France)
Publication Date:
Report Number(s):
LLNL-JRNL-733609
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION
OSTI Identifier:
1438720
Alternate Identifier(s):
OSTI ID: 1414611