A5026566825- High-pressure geophysics and materials
- Laser-Plasma Interactions and Diagnostics
- Laser-Matter Interactions and Applications
- nanoparticles nucleation surface interactions
- Dust and Plasma Wave Phenomena
- Crystallization and Solubility Studies
- Coagulation and Flocculation Studies
- Fluid Dynamics and Heat Transfer
- Advanced Memory and Neural Computing
- Spectroscopy Techniques in Biomedical and Chemical Research
- Particle Accelerators and Free-Electron Lasers
- Quantum and electron transport phenomena
- High-Energy Particle Collisions Research
- Plasma Diagnostics and Applications
- Machine Learning in Materials Science
- Advanced Fiber Laser Technologies
- Computational Fluid Dynamics and Aerodynamics
- Electromagnetic Simulation and Numerical Methods
- Quantum, superfluid, helium dynamics
- Laser-induced spectroscopy and plasma
CEA DAM Île-de-France
2022-2025
Université Paris-Saclay
2022-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2022-2025
CEA Paris-Saclay
2022-2025
California Earthquake Authority
2024
Sandia National Laboratories
2024
École Normale Supérieure Paris-Saclay
2018-2020
We report the results of second charged-particle transport coefficient code comparison workshop, which was held in Livermore, California on 24–27 July 2023. This workshop gathered theoretical, computational, and experimental scientists to assess state computational techniques for understanding coefficients relevant high-energy-density plasma science. Data electronic ionic coefficients, namely, direct current electrical conductivity, electron thermal ion shear viscosity, conductivity were...
The dynamics of an inertial confinement fusion capsule, or a stellar planet interior, obey very similar set equations: magneto-radiative-hydrodynamic equations. solutions these equations, however, depend entirely on the transport properties associated with different materials at play. To properly model systems, it is necessary to determine high accuracy coefficients several over large range thermodynamic conditions. Experimental capabilities in this respect are still limited due nature...
ABSTRACT In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of average‐atom approximation and models opacities, such as Ziman or Ziman–Evans is discussed results compared to ab initio simulations. We begin by recalling derivation resistivity from Kubo's linear response theory, using local solutions Lippmann–Schwinger equation. With help approximation, explicitly introduce an ionic structure factor into...
In this article, we use the general theory derived in Paper I [M. Tacu and D. Bénisti, Phys. Plasmas 29, 052108 (2022)] order to address several long-standing issues regarding nonlinear electron plasma waves (EPWs). First, discuss relevance practical usefulness of stationary solutions Vlasov–Poisson system, so-called Bernstein–Greene–Kruskal modes, model slowly varying waves. Second, derive an upper bound for wave breaking limit EPW growing initially Maxwellian plasma. Moreover, show a...
This paper provides a complete self-consistent nonlinear theory for electron plasma waves, within the framework of adiabatic approximation. The applies whatever variations wave amplitude provided that they are slow enough, and it is also valid when inhomogeneous non-stationary. Moreover, accounts for: (i) geometrical jump in action resulting from separatrix crossing; (ii) continuous change phase velocity making frame non-inertial; (iii) harmonic content scalar potential; (iv) non-zero vector...
We propose an alternative method of estimating the mean diameter and dispersion clusters particles, formed in a cooling gas, right after nucleation stage. Using moment model developed by Friedlander [S. K. Friedlander, Ann. N. Y. Acad. Sci. 404, 354 (1983)], we derive analytic relationship for both cluster as function two characteristic times system: time primary constituents collision time. These formulas can be used to predict variation with process parameters, such initial constituents'...
We discovered a novel effect that can cause witness emittance growth in plasma wakefield accelerators. The appears linear or moderately nonlinear waves. experiences time-varying focusing force and loses quality during the time required for drive beam to reach transverse equilibrium with wave. higher charge, lower rate because of additional by its own wakefield. However, head always degrades, boundary between degraded intact parts gradually propagates backward along bunch.
This article addresses the stability of a nonlinear electron plasma wave (EPW) against growth longitudinal sidebands. The distribution function consistent with EPW is assumed to only depend on dynamical action. Consequently, either stationary (a so-called Berstein-Greene-Kruskal mode) or varies very slowly in space and time adiabatic wave). sideband rates unstable spectrum are calculated theoretically by accounting for exact orbits EPW. Our theoretical results compared those from previous...