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Laser-driven plasma pinching in e^{-}e^{+} cascade.

E S Efimenko1, A V Bashinov1, A A Gonoskov1,2

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High-intensity lasers above 20 PW can trigger quantum electrodynamics (QED) cascades and plasma pinching. This creates extreme conditions for fundamental physics research.

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Area of Science:

  • Plasma Physics
  • Quantum Electrodynamics (QED)
  • High-Intensity Laser Physics

Background:

  • Electron-positron plasma generation is crucial for studying extreme conditions.
  • Understanding plasma dynamics in intense laser fields requires advanced simulation techniques.

Purpose of the Study:

  • To investigate the cascaded production and dynamics of electron-positron plasma in intense laser fields.
  • To explore the potential for triggering QED cascades and plasma pinching.
  • To determine the feasibility of creating extreme conditions for fundamental physics research.

Main Methods:

  • Three-dimensional particle-in-cell simulations.
  • Inclusion of quantum electrodynamics (QED) processes.
  • Modeling of focused laser fields with extreme intensity.

Main Results:

  • Lasers exceeding 20 PW can initiate QED cascades and plasma pinching.
  • Plasma self-compression leads to densities of at least 10^28 cm^-3.
  • Magnetic and electric fields reach significant fractions of the Schwinger field.

Conclusions:

  • The proposed setup enables the study of extreme matter and vacuum physics.
  • Further quantum treatment may be necessary to fully understand the process limits.
  • This research opens avenues for exploring fundamental physics under novel conditions.