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Electron dynamics controlled via self-interaction.

Matteo Tamburini1, Christoph H Keitel1, Antonino Di Piazza1

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Electron motion in strong laser fields is controlled by radiation reaction. Changing the laser pulse phase steers electron beams, offering a new method for controlling particle dynamics.

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Area of Science:

  • Plasma Physics
  • Quantum Electrodynamics
  • High-Intensity Laser-Matter Interactions

Background:

  • Radiation reaction significantly damps electron motion in strong laser fields, causing substantial energy loss.
  • Understanding electron dynamics is crucial for advanced applications in particle acceleration and high-energy physics.

Purpose of the Study:

  • To investigate the indirect control of electron dynamics in bichromatic laser fields via radiation reaction.
  • To demonstrate a method for controlled deflection of electron bunches using laser phase manipulation.

Main Methods:

  • Simulating electron dynamics in a bichromatic laser pulse under the influence of radiation reaction and Lorentz forces.
  • Analyzing the effect of varying the relative phase between laser frequency components.

Main Results:

  • Electron dynamics can be indirectly controlled by radiation reaction through its interplay with the Lorentz force.
  • Controlled deflection of ultrarelativistic electron bunches is achieved by altering the relative phase of the bichromatic laser field.
  • The deflection angle is independent of the initial electron energy.

Conclusions:

  • A novel method for controlling electron beam deflection using laser phase is presented.
  • The effect is observable with current petawatt laser systems, paving the way for experimental verification.
  • This research offers new possibilities for manipulating charged particle beams in intense laser fields.