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Gyrokinetic linearized Landau collision operator.

Jens Madsen1

  • 1Association EURATOM-DTU, Technical University of Denmark, Department of Physics, DK-4000 Roskilde, Denmark. jmad@fysik.dtu.dk

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 16, 2013
PubMed
Summary
This summary is machine-generated.

The full gyrokinetic electrostatic linearized Landau collision operator was calculated, including the equilibrium operator for plasma collisions. This operator is crucial for understanding energy exchange and vorticity dynamics in turbulent plasmas.

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Area of Science:

  • Plasma physics
  • Kinetic theory

Background:

  • Collisional effects are critical in turbulent plasmas.
  • Existing models may not fully capture these effects, especially in multi-species plasmas.

Purpose of the Study:

  • To calculate the full gyrokinetic electrostatic linearized Landau collision operator.
  • To incorporate the equilibrium operator, which accounts for particle collisions.

Main Methods:

  • Calculation of the linearized Landau collision operator.
  • Inclusion of the equilibrium operator describing particle collisions.

Main Results:

  • The equilibrium operator accounts for energy exchange between different plasma species.
  • It also describes the drag and diffusion of magnetic field-aligned vorticity due to E×B drift.
  • The operator is essential even for like-particle collisions in turbulent plasmas.

Conclusions:

  • The full gyrokinetic electrostatic linearized Landau collision operator, including the equilibrium operator, is now calculated.
  • This provides a more accurate description of collisional effects in turbulent plasmas.
  • The equilibrium operator is vital for understanding energy transfer and vorticity dynamics.