Observation of ponderomotively driven bow shock using Thomson scattering

High-energy speckled lasers are known to exert ponderomotive forces on a plasma. This can reduce flow transverse to the propagation of the beams. When coupled with a supersonic flow, this has been shown to lead to the formation of a shock that travels against the flow. Experiments conducted on the OMEGA laser facility have used Thomson scattering to observe density and velocity changes consistent with this ponderomotively driven shock. Comparisons of the data with hydrodynamic simulations with the ponderomotive force, particle-in-cell simulations with a full Maxwell field solver, and hydrodynamic simulations without the ponderomotive force show that this shock feature is only reproduced when accounting for the ponderomotive force.

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Publication Details

Journal
Physical Review Research
Published
2025-02-13
DOI
https://doi.org/10.1103/physrevresearch.7.013163
Primary Topic
Laser-Plasma Interactions and Diagnostics
Type
article
Field-Weighted Citation Impact
0.00

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article

Observation of ponderomotively driven bow shock using Thomson scattering

S. Hüller, W. Rozmus, W. A. Farmer, A. L. Milder et al.
Physical Review Research
Laser-Plasma Interactions and Diagnostics
article

Observation of ponderomotively driven bow shock using Thomson scattering

S. Hüller, W. Rozmus, W. A. Farmer, A. L. Milder, George F. Swadling, Jan Ludwig, Harvey A. Rose, Lin Yin, C. Bruulsema, C. A. Walsh, B. J. Albright
article en

Abstract

High-energy speckled lasers are known to exert ponderomotive forces on a plasma. This can reduce flow transverse to the propagation of the beams. When coupled with a supersonic flow, this has been shown to lead to the formation of a shock that travels against the flow. Experiments conducted on the OMEGA laser facility have used Thomson scattering to observe density and velocity changes consistent with this ponderomotively driven shock. Comparisons of the data with hydrodynamic simulations with the ponderomotive force, particle-in-cell simulations with a full Maxwell field solver, and hydrodynamic simulations without the ponderomotive force show that this shock feature is only reproduced when accounting for the ponderomotive force.

Physical Review ResearchVol. 7(1)
Lawrence Livermore National Laboratory (US), Los Alamos National Laboratory (US), École Polytechnique (FR), University of Alberta (CA), Applied Energetics (United States) (US)
U.S. Department of Energy, University of Rochester, National Nuclear Security Administration, Lawrence Livermore National Laboratory, Los Alamos National Laboratory
Openalex Percentile: Top 98%
Laser-Plasma Interactions and Diagnostics
DOIOpen Access PDFOpenAlex
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Observation of ponderomotively driven bow shock using Thomson scattering — S. Hüller, W. Rozmus, et al. · Physical Review Research (2025) | TGRS Research Map | TGRS