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Characteristic of a triple-cathode vacuum arc plasma source
1Institute of Electric Engineering, China Academy of Engineering Physics, P.O. Box 919-518, Mianyang 621900, China. xiangwei-iee@qq.com
The Review of Scientific Instruments
|March 3, 2012
Summary
A new triple-cathode vacuum arc plasma source was developed for improved ion beams. This study measured plasma plume expansion using a Langmuir probe array, detailing performance for separate and simultaneous generator operation.
Area of Science:
- Plasma Physics
- Ion Beam Generation
- Vacuum Arc Discharges
Background:
- Optimizing ion beam quality is crucial for various applications.
- Existing vacuum arc plasma sources require further development for enhanced performance.
- Understanding plasma plume dynamics is key to improving source efficiency.
Purpose of the Study:
- To develop and characterize a novel triple-cathode vacuum arc plasma source.
- To investigate the behavior of expanding plasma plumes from this source.
- To evaluate the source's performance under different operating conditions.
Main Methods:
- Development of a triple-cathode vacuum arc plasma source with three circular, equally spaced generators.
- Utilizing high-voltage breakdown for initiating plasma generation.
- Employing a Langmuir probe array to measure saturated ion current density.
- Analyzing time-dependence profiles of plasma plume expansion.
Main Results:
- Demonstrated successful operation of individual and simultaneous plasma generators.
- Provided time-dependent profiles of saturated ion current density for various operational modes.
- Characterized the plasma behavior and plume expansion dynamics.
- Presented detailed plasma characteristics of the developed source.
Conclusions:
- The triple-cathode vacuum arc plasma source shows promise for generating improved ion beams.
- The Langmuir probe array effectively characterized the expanding plasma plumes.
- Simultaneous operation of generators influences plasma plume characteristics.
- This research contributes to the advancement of vacuum arc plasma source technology.
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