A5011971527- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- High-pressure geophysics and materials
- Laser-Matter Interactions and Applications
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Laser Design and Applications
- Particle Dynamics in Fluid Flows
- Energetic Materials and Combustion
- Laser Material Processing Techniques
- Aquatic and Environmental Studies
- Gamma-ray bursts and supernovae
- Advanced Numerical Methods in Computational Mathematics
- Gas Dynamics and Kinetic Theory
- Combustion and Detonation Processes
- Nuclear Physics and Applications
- High-Velocity Impact and Material Behavior
- Advanced Computational Techniques in Science and Engineering
- Plasma and Flow Control in Aerodynamics
- Petroleum Processing and Analysis
- Spectroscopy and Chemometric Analyses
- Cold Fusion and Nuclear Reactions
- Nuclear Engineering Thermal-Hydraulics
- Astrophysical Phenomena and Observations
- Geotechnical and Geomechanical Engineering
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2015-2024
Keldysh Institute of Applied Mathematics
2015-2024
The University of Sydney
2017
Lawrence Livermore National Laboratory
2017
CEA DAM Île-de-France
2017
University of Strathclyde
2017
Lavrentyev Institute of Hydrodynamics
2017
Russian Academy of Sciences
2009-2014
Turbulent Richtmyer--Meshkov instability (RMI) is investigated through a series of high resolution three dimensional smulations two initial conditions with eight independent codes. The simulations are initialised narrowband perturbation such that growth due to non-linear coupling/backscatter from the energetic modes, thus generating lowest expected rate pure RMI. By independently assessing results each algorithm, and computing ensemble averages multiple algorithms, allow quantification key...
The heating of inertial confinement fusion (ICF) target by fast electrons, which are generated as a result laser interaction with expanding plasma (corona) target, is investigated theoretically. It shown that due to remoteness the peripheral region, where electrons accelerated, significant portion these particles, moving in corona and repeatedly crossing it reflection self-consistent electric field, will not hit into compressed part target. Using modern models electron generation, typical...
Abstract In the previous works (Rozanov et al ., 2013; 2015) we have performed one-dimensional (1D) numerical simulations of target compression and burning at absorbed energy ~1.5 MJ. As a result, was chosen to low initial aspect ratio in order be less sensitive influence such parameters as laser pulse duration, total energy, equations state model. The simulation results demonstrated higher probability ignition effective system. present work discuss impact irradiation asymmetry on this...
Heating a solid material with laser-accelerated fast electrons is particularly useful method for generating plane powerful shock wave pressure of several hundred or even thousands Mbar in the laboratory. Behind front such wave, dense plasma heated to temperature keV. Then, high rate radiation energy loss occurs low-Z plasmas. In this paper, strong compression matter due cooling Gbar driven by studied using both computational and theoretical approaches. It shown that effect leads peripheral...
Detailed unstructured grids and numerical methods of high accuracy are frequently used in the simulation gasdynamic flows areas with complex geometry. Galerkin method discontinuous basis functions or Discontinuous Method (DGM) works well dealing such problems. This approach offers a number advantages inherent to both finite-element finite-difference approximations. Moreover, present paper shows that DGM schemes can be viewed as Godunov extension piecewise-polynomial functions.
The results of numerical and theoretical studies the gain direct-drive inertial confinement fusion (ICF) target, which includes a kinetic description energy transfer by laser-accelerated fast electrons, are presented. range initial temperature electrons fraction laser contained in these particles were chosen based on recent experiments at National Ignition Facility (NIF).The effect 'wandering' is taken into account. It due to remoteness region electron generation from ablation surface...
Abstract The effect of energy transfer by laser-accelerated fast electrons on thermonuclear gain a shock-ignited ICF target at different powers and durations the high-intensity part laser pulse (spike) responsible for igniting shock wave generation has been investigated basis hydro-kinetic numerical simulations. key result these studies is that fast-electron able to provide great contribution pressure maintain high with significant decrease in pulse. Calculations were performed 2nd harmonic...
The paper presents computational and experimental studies of the evolution turbulent mixing in three-layer gas systems with development hydrodynamic instabilities, particular Richtmyer-Meshkov Kelvin-Helmholtz, under action shock waves. One contact boundaries gases was flat, other a break form chevron. Numerical calculations are performed both without initial perturbations boundaries, presence perturbations. It is shown that roughness boundary significantly affects width zone.
The phenomenon of laser-driven heating wave propagation in a plasma with density less than the critical is considered for case finite radius laser beam. Based on computational and theoretical studies, effect channeling central axial region due to reflection radiation gradient, formed by motion, at tuning point was found. Unlike self-focusing phenomenon, where flux concentrated without ray intersection, refractive channeling, this occurs intersection. This similar creation high during...