Observation of ponderomotively driven bow shock using Thomson scattering
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- Laboratory for Laser Energetics, Rochester, NY (United States); University of Alberta (Canada)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland)
- University of Alberta (Canada)
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
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.
- Research Organization:
- University of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344; NA0004144
- OSTI ID:
- 2530187
- Journal Information:
- Physical Review Research, Journal Name: Physical Review Research Journal Issue: 1 Vol. 7; ISSN 2643-1564
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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