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<p>Capillary discharge dynamics is discussed. Magnetohydrodynamic (MHD) model for theoretical description and computer simulations taking into account all necessary dissipative processes is formulated. Capillary pinching discharge provides a very successful way of pumping of compact and efficient extreme ultraiolet lasers. In dissipative discharges a radial gradient of the plasma density naturally occurs because the temperature is higher on the axis, so the plasma density is minimal in the center and increases toward the walls. This creates a plasma waveguide that allows laser pulses to be transmitted over distances significantly exceeding the Rayleigh length, which provides the conditions required for laser wake field acceleration of electrons. Capillary discharges are also used to control and manipulate the dynamics of charged particle beams. We present an overview of theoretical methods used to describe the properties of capillary discharge plasmas in the context of intense laser-plasma interactions.</p>

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Capillary discharge plasma: X-ray lasers pumping, optical guiding and focusing of charged particles

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • N. A. Bobrova,
  • S. V. Bulanov,
  • A. Jancarek,
  • P. V. Sasorov,
  • P. Vrba,
  • M. Vrbova

摘要

Capillary discharge dynamics is discussed. Magnetohydrodynamic (MHD) model for theoretical description and computer simulations taking into account all necessary dissipative processes is formulated. Capillary pinching discharge provides a very successful way of pumping of compact and efficient extreme ultraiolet lasers. In dissipative discharges a radial gradient of the plasma density naturally occurs because the temperature is higher on the axis, so the plasma density is minimal in the center and increases toward the walls. This creates a plasma waveguide that allows laser pulses to be transmitted over distances significantly exceeding the Rayleigh length, which provides the conditions required for laser wake field acceleration of electrons. Capillary discharges are also used to control and manipulate the dynamics of charged particle beams. We present an overview of theoretical methods used to describe the properties of capillary discharge plasmas in the context of intense laser-plasma interactions.