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<p>The advance in developing methods for generating super-strong magnetic fields (from several teslas to several and even tens of kiloteslas) opens up new possibilities for using them to control beams of charged particles. In this paper, we present a theoretical analysis and calculation of the influence of a super-intense external magnetic field (up to 100 kT) on the process of generating and collimating a laser plasma flow and fast electrons with energies exceeding 1 MeV, which are obtained due to the interaction of a laser pulse having the relativistic intensity and a femtosecond duration with a thin aluminum foil. The obtained analytical estimates of the electron beam collimation agree well with the results of computer calculations. Time evolution of the electron beam is also considered, and estimates of the electron charge loss over time as a function of the external magnetic field are presented.</p>

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Influence of an External Magnetic Field on Collimation of the Electrons Accelerated by a High-Intensity Femtosecond Laser Pulse

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • M. V. Sedov,
  • S. N. Ryazantsev,
  • I. Yu. Skobelev,
  • S. S. Makarov

摘要

The advance in developing methods for generating super-strong magnetic fields (from several teslas to several and even tens of kiloteslas) opens up new possibilities for using them to control beams of charged particles. In this paper, we present a theoretical analysis and calculation of the influence of a super-intense external magnetic field (up to 100 kT) on the process of generating and collimating a laser plasma flow and fast electrons with energies exceeding 1 MeV, which are obtained due to the interaction of a laser pulse having the relativistic intensity and a femtosecond duration with a thin aluminum foil. The obtained analytical estimates of the electron beam collimation agree well with the results of computer calculations. Time evolution of the electron beam is also considered, and estimates of the electron charge loss over time as a function of the external magnetic field are presented.