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Plasma rotation in a plasma generator

Meyer1, Klose, Pasch

  • 1Bereich Plasmadiagnostik, Max-Planck-Institut fur Plasmaphysik, Mohrenstrasse 41, D-10117 Berlin, Germany.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|November 23, 2000
PubMed
Summary

Plasma rotation in linear magnetic configurations was studied using Doppler spectroscopy. A simple angular momentum model explains observed plasma rotation, aligning with multifluid discharge descriptions.

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Area of Science:

  • Plasma physics
  • Magnetic confinement fusion

Background:

  • Understanding plasma rotation is crucial for controlling plasma behavior in devices like fusion reactors.
  • Previous models often simplify the complex dynamics of rotating plasmas.

Purpose of the Study:

  • To investigate plasma rotation in a linear magnetic configuration.
  • To explore the influence of device parameters, ion mass, and radial profiles on plasma rotation.
  • To develop and validate a simplified model for plasma rotation.

Main Methods:

  • High-resolution Doppler spectroscopy was employed to measure plasma rotation.
  • Systematic variation of external device parameters and ion mass.
  • Analysis of radial profiles of plasma properties.

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Main Results:

  • Empirically determined dependencies of average angular velocity were identified.
  • A simple model based on conservation of total angular momentum successfully explained the main observed trends.
  • The experimental findings were compared with established multifluid descriptions for hollow cathode discharges.

Conclusions:

  • The conservation of total angular momentum provides a valid framework for understanding plasma rotation in this configuration.
  • The study offers insights into plasma dynamics relevant to magnetic confinement and discharge physics.
  • The results support and refine existing multifluid models for plasma behavior.