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Title: Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas

Abstract

The interaction of intense laser beams with plasmas created on solid targets involves a rich nonlinear physics. Because such dense plasmas are reflective for laser light, the coupling with the incident beam occurs within a thin layer at the interface between plasma and vacuum. One of the main paradigms used to understand this coupling, known as the Brunel mechanism, is expected to be valid only for very steep plasma surfaces. Despite innumerable studies, its validity range remains uncertain, and the physics involved for smoother plasma-vacuum interfaces is unclear, especially for ultrahigh laser intensities. We report the first comprehensive experimental and numerical study of the laser-plasma coupling mechanisms as a function of the plasma interface steepness, in the relativistic interaction regime. Our results reveal a clear transition from the temporally periodic Brunel mechanism to a chaotic dynamic associated to stochastic heating. By revealing the key signatures of these two distinct regimes on experimental observables, we provide an important landmark for the interpretation of future experiments.

Authors:
 [1];  [1];  [2];  [1];  [3];  [3];  [1];  [1];  [1];  [1]
  1. Univ. Paris-Saclay, Gif-sur-Yvette (France). Alternative Energies and Atomic Energy Commission (CEA), Saclay (France)
  2. Univ. Paris-Saclay, Gif-sur-Yvette (France). Alternative Energies and Atomic Energy Commission (CEA), Saclay (France); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1502275
Alternate Identifier(s):
OSTI ID: 1530190
Grant/Contract Number:  
AC02-06CH11357; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Chopineau, L., Leblanc, A., Blaclard, G., Denoeud, A., Thévenet, M., Vay, J-L., Bonnaud, G., Martin, Ph., Vincenti, H., and Quéré, F. Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas. United States: N. p., 2019. Web. doi:10.1103/PhysRevX.9.011050.
Chopineau, L., Leblanc, A., Blaclard, G., Denoeud, A., Thévenet, M., Vay, J-L., Bonnaud, G., Martin, Ph., Vincenti, H., & Quéré, F. Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas. United States. doi:10.1103/PhysRevX.9.011050.
Chopineau, L., Leblanc, A., Blaclard, G., Denoeud, A., Thévenet, M., Vay, J-L., Bonnaud, G., Martin, Ph., Vincenti, H., and Quéré, F. Thu . "Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas". United States. doi:10.1103/PhysRevX.9.011050.
@article{osti_1502275,
title = {Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas},
author = {Chopineau, L. and Leblanc, A. and Blaclard, G. and Denoeud, A. and Thévenet, M. and Vay, J-L. and Bonnaud, G. and Martin, Ph. and Vincenti, H. and Quéré, F.},
abstractNote = {The interaction of intense laser beams with plasmas created on solid targets involves a rich nonlinear physics. Because such dense plasmas are reflective for laser light, the coupling with the incident beam occurs within a thin layer at the interface between plasma and vacuum. One of the main paradigms used to understand this coupling, known as the Brunel mechanism, is expected to be valid only for very steep plasma surfaces. Despite innumerable studies, its validity range remains uncertain, and the physics involved for smoother plasma-vacuum interfaces is unclear, especially for ultrahigh laser intensities. We report the first comprehensive experimental and numerical study of the laser-plasma coupling mechanisms as a function of the plasma interface steepness, in the relativistic interaction regime. Our results reveal a clear transition from the temporally periodic Brunel mechanism to a chaotic dynamic associated to stochastic heating. By revealing the key signatures of these two distinct regimes on experimental observables, we provide an important landmark for the interpretation of future experiments.},
doi = {10.1103/PhysRevX.9.011050},
journal = {Physical Review. X},
number = 1,
volume = 9,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevX.9.011050

Citation Metrics:
Cited by: 2 works
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Works referenced in this record:

Energetic proton generation in ultra-intense laser–solid interactions
journal, February 2001

  • Wilks, S. C.; Langdon, A. B.; Cowan, T. E.
  • Physics of Plasmas, Vol. 8, Issue 2, p. 542-549
  • DOI: 10.1063/1.1333697