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An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
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Note: Triggering behavior of a vacuum arc plasma source.

C H Lan1, J D Long1, L Zheng1

  • 1Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, People's Republic of China.

The Review of Scientific Instruments
|September 3, 2016
PubMed
Summary
This summary is machine-generated.

The triggering method significantly impacts vacuum arc plasma discharge symmetry. Independent electric source triggering achieves better axial symmetry than resistance triggering, correlating with electron emission behavior.

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Area of Science:

  • Plasma Physics
  • Electrical Engineering

Background:

  • Axial symmetry is crucial for vacuum arc plasma applications.
  • The triggering method's influence on stable discharge symmetry was previously unclear.

Purpose of the Study:

  • To investigate how different triggering methods affect the axial symmetry of vacuum arc discharge.
  • To compare the performance of independent electric source triggering versus resistance triggering.

Main Methods:

  • Utilized high-speed multiframe photography to observe discharge transition processes.
  • Analyzed the transition from cathode-trigger discharge to cathode-anode discharge.

Main Results:

  • Observed distinct performance differences between the two triggering methods.
  • Independent electric source triggering successfully stabilized arc discharge at the anode grid center.
  • Resistance triggering resulted in poor axial symmetry.

Conclusions:

  • The triggering method is a critical factor determining vacuum arc plasma discharge symmetry.
  • Independent electric source triggering offers superior control over axial symmetry compared to resistance triggering.
  • The triggering process is closely linked to emitted electron behavior.