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Updated: Aug 6, 2026
08:36
An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
Published on: November 3, 2016
Quasineutral plasma models
R F Fernsler1, S P Slinker, G Joyce
1Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA.
Summary
The quasineutral plasma model, widely used for decades, has limitations. New fluid and kinetic models overcome these, offering a more accurate approach to plasma behavior without problematic singularities.
Area of Science:
- Plasma Physics
- Computational Physics
Background:
- The established quasineutral plasma model relies on charge neutrality and the electron Boltzmann relationship.
- The Boltzmann relationship is often unjustified and limits kinetic treatments, causing singularities in the Bohm condition.
Purpose of the Study:
- To develop and evaluate more general quasineutral plasma models.
- To overcome the limitations of the traditional Boltzmann relationship in plasma simulations.
Main Methods:
- Development of two new fluid-based quasineutral models.
- Development of a third, fully kinetic quasineutral model.
- Comparison of models using fluid simulations.
Main Results:
- The kinetic model and one fluid model directly yield the Bohm condition.
- The new models avoid the singularities associated with the traditional approach.
- Fluid simulations validate the performance of the developed models.
Conclusions:
- General quasineutral models offer significant improvements over the traditional Langmuir model.
- Kinetic and advanced fluid approaches provide singularity-free derivations of the Bohm condition.
- These new models enhance the accuracy and applicability of plasma simulations.
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