Analytic model of electromagnetic fields around a plasma bubble in the blow-out regime

2013/01/01 by S. A. Yi, V. Khudik, Vladimir Khudik +4 · 1 citation
Engineering · Physics and Astronomy · #Ion-surface interactions and analysis #Laser-Plasma Interactions and Diagnostics #Laser-induced spectroscopy and plasma

paper · doi:10.1063/1.4775774

openalex publication_date 2013/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22

Abstract

An analytic model of the electric and magnetic fields surrounding the nonlinear plasma “bubble” formed around the high-current electron bunch in a plasma wakefield accelerator is developed. The model, justified by the results of particle-in-cell simulations, accurately captures the thin high-density plasma sheath and extended return current layer surrounding the bubble. The resulting global fields inside and outside the bubble are used to investigate electron self-injection in a plasma with a smooth density gradient. It is shown that accurate description of the current/density sheaths is crucial for quantitative description of self-injection.

Citations

• Kinetic modeling of intense, short laser pulses propagating in tenuous plasmas

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