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Resonant transducers for solid-state plasma density modulation
Gary A Hallock1, Mark A Meier2
1The University of Texas at Austin, Austin, Texas 78701, USA.
The Review of Scientific Instruments
|May 2, 2016
Summary
Researchers created transducers to control plasma density and gradients in indium antimonide using piezoelectric drivers and acoustic resonance. This method successfully modulated plasma density, confirmed by laser diagnostics and a layered media model.
Area of Science:
- Plasma physics
- Materials science
- Acoustics
Background:
- Controlling plasma properties is crucial for various applications.
- Indium antimonide (InSb) is a semiconductor with unique electronic properties.
Purpose of the Study:
- To develop and demonstrate transducers for modulating plasma density and gradients in indium antimonide.
- To investigate the use of acoustic pressure resonance for plasma modulation.
Main Methods:
- Developed transducers utilizing piezoelectric drivers.
- Excited acoustic pressure resonance at 3λ/2 to generate standing waves.
- Measured plasma density directly using laser diagnostics.
- Employed a layered media model for analysis.
Main Results:
- Successfully modulated plasma density and plasma density gradients in indium antimonide.
- Generated large amplitude standing waves via acoustic resonance.
- Experimental measurements showed good agreement with the layered media model predictions.
Conclusions:
- The developed transducers effectively control plasma density and gradients in indium antimonide.
- Acoustic pressure resonance is a viable method for plasma modulation.
- The layered media model accurately describes the observed phenomena.
