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AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

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Published on: July 28, 2008

Ion heating with beating electrostatic waves.

B Jorns1, E Y Choueiri

  • 1Electric Propulsion and Plasma Dynamics Laboratory (EPPDyL), Princeton University, Princeton, New Jersey 08544, USA.

Physical Review Letters
|March 17, 2011
PubMed
Summary
This summary is machine-generated.

Two beating electrostatic waves (BEW) can vigorously accelerate ions, offering enhanced heating compared to single electrostatic wave (SEW) heating. This study confirms beating wave heating (BEWH) is superior across all parameters.

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Area of Science:

  • Plasma Physics
  • Nonlinear Dynamics
  • Ion Acceleration

Background:

  • Single electrostatic wave (SEW) heating is a known method for ion acceleration.
  • Nonlinear interactions can lead to enhanced particle acceleration.
  • Previous work demonstrated ion acceleration using two beating electrostatic waves (BEW).

Purpose of the Study:

  • To extend the single ion acceleration mechanism to ensemble heating.
  • To compare the effectiveness of beating wave heating (BEWH) versus single electrostatic wave heating (SEWH).
  • To analytically derive the heating level for BEWH and SEWH.

Main Methods:

  • Numerical solution of the Vlasov equation.
  • Application of Lie transforms for analytical derivation.
  • Comparison of heating levels across parameter space.

Main Results:

  • BEWH demonstrates superior ion heating compared to SEWH for comparable wave energy densities.
  • An analytical expression for the heating level was derived.
  • The superiority of BEWH was shown to hold across all parameter spaces.

Conclusions:

  • The nonlinear interaction with two BEW provides a more effective mechanism for ion heating than SEW.
  • BEWH is a promising method for enhanced plasma heating.
  • The derived analytical model supports the observed superiority of BEWH.