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Related Experiment Videos

Ionization fronts in negative corona discharges.

Manuel Arrayás1, Marco A Fontelos, José L Trueba

  • 1Departamento de Matemáticas y Física Aplicada, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|May 21, 2005
PubMed
Summary

This study models negative corona discharge using a hydrodynamic minimal streamer model. It reveals laws governing ionization front evolution and demonstrates the self-similar nature of front thickness diffusion.

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Area of Science:

  • Plasma Physics
  • Fluid Dynamics

Background:

  • Negative corona discharge is a complex plasma phenomenon.
  • Understanding ionization front dynamics is crucial for applications.

Purpose of the Study:

  • To investigate the temporal evolution of negative corona discharge.
  • To analyze the behavior of ionization fronts using a novel modeling approach.

Main Methods:

  • Utilized a hydrodynamic minimal streamer model.
  • Reformulated the model using a shielding factor.
  • Computed ionization front radius, intensity, and thickness evolution.

Main Results:

  • Deduced temporal evolution laws for ionization front radius and intensity.
  • Computed the evolution of ionization front thickness.

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  • Demonstrated the self-similar character of front thickness diffusion.

    • Conclusions:

    • The shielding factor provides insights into ionization front dynamics.
    • The model accurately captures key aspects of negative corona discharge.
    • Front thickness diffusion exhibits self-similar behavior under specific geometric conditions.