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Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas
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Published on: May 25, 2021

Electron self-injection in multidimensional relativistic-plasma wake fields.

I Kostyukov1, E Nerush, A Pukhov

  • 1Institute of Applied Physics, Russian Academy of Science, 46 Uljanov Street, 603950 Nizhny Novgorod, Russia.

Physical Review Letters
|November 13, 2009
PubMed
Summary
This summary is machine-generated.

We developed a model for electron self-injection during plasma acceleration. It predicts electron trapping conditions and cross-sections, matching simulation results for laser-driven and beam-driven plasma wakefield accelerators.

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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Area of Science:

  • Plasma Physics
  • Particle Acceleration
  • Laser-Plasma Interactions

Background:

  • Electron acceleration relies on plasma waves, often generated by intense lasers or electron beams.
  • The bubble regime (laser-driven) and blowout regime (beam-driven) create plasma cavities for efficient acceleration.
  • Understanding electron self-injection into these cavities is crucial for controlling beam properties.

Purpose of the Study:

  • To develop an analytical model for electron self-injection in laser- and beam-driven plasma wakefield accelerators.
  • To predict the conditions and cross-section for electron trapping within plasma bubbles.
  • To validate the model against advanced numerical simulations.

Main Methods:

  • Formulation of an analytical model for electron self-injection.
  • Analysis of plasma cavity dynamics in the bubble/blowout regimes.
  • Comparison of model predictions with 3D particle-in-cell simulations.

Main Results:

  • The model accurately predicts electron trapping conditions based on bubble properties.
  • The trapping cross-section is determined as a function of bubble radius and velocity.
  • Excellent agreement was found between the analytical model and 3D particle-in-cell simulations.

Conclusions:

  • The developed analytical model provides a robust framework for understanding electron self-injection in plasma accelerators.
  • The model's predictions are validated by sophisticated numerical simulations.
  • This work advances the theoretical understanding of particle trapping in laser- and beam-driven plasma wakefield acceleration.