Hydrodynamical model of QED cascade expansion in an extremely strong laser pulse
| Autor: | A. S. Samsonov, I. Yu. Kostyukov, E. N. Nerush |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
FOS: Physical sciences QC770-798 01 natural sciences 010305 fluids & plasmas law.invention law Nuclear and particle physics. Atomic energy. Radioactivity 0103 physical sciences Physics::Atomic Physics Electrical and Electronic Engineering 010306 general physics Quantum Physics Plasma Laser Atomic and Molecular Physics and Optics Physics - Plasma Physics Magnetic field Pulse (physics) Plasma Physics (physics.plasm-ph) Nonlinear system Nuclear Energy and Engineering Cascade Quantum electrodynamics Intensity (heat transfer) |
| Zdroj: | Matter and Radiation at Extremes, Vol 6, Iss 3, Pp 034401-034401-16 (2021) |
| DOI: | 10.48550/arxiv.2010.14116 |
| Popis: | Development of the self-sustained quantum-electrodynamical (QED) cascade in a single strong laser pulse is studied analytically and numerically. The hydrodynamical approach is used to construct the analytical model of the cascade evolution, which includes the key features of the cascade observed in 3D QED particle-in-cell (QED-PIC) simulations such as the magnetic field predominance in the cascade plasma and laser energy absorption. The equations of the model are derived in the closed form and are solved numerically. Direct comparison between the solutions of the model equations and 3D QED-PIC simulations shows that our model is able to describe the complex nonlinear process of the cascade development qualitatively well. The various regimes of the interaction based on the intensity of the laser pulse are revealed in both the solutions of the model equations and the results of the QED-PIC simulations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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