Ion Generator Apparatus With Movable Cathodes For Plasma Tuning
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Solution Overview
Problem
Existing plasma generating devices lack the ability to precisely tune plasma to specific electric potentials and desired settings due to fixed anode and cathode distances, limiting flexibility and control over plasma generation.
Innovation Solution
A plasma generating device with a central anode bracketed by two movable cathodes, allowing for precise control of the distance between the cathodes and anode using high precision servo drive motors, enabling adjustable plasma ignition and electron/ion concentration, and utilizing electromagnetic field generators to control plasma regimes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed anode and cathode distances are used, then the device structure is simple, but the ability to tune plasma to specific electric potentials and desired settings is lost
Solution Approach 1:
The patent implements movable cathodes with adjustable positions relative to the anode, transforming the static electrode configuration into a dynamic system. This allows the cathode-anode distance to be varied, enabling plasma tuning to specific electric potentials and desired settings while maintaining a relatively simple overall device structure.
2Measurement precision
If the body of the apparatus is used as the cathode, then the device complexity is reduced, but precise positioning of the cathode relative to the anode is compromised
Solution Approach 1:
The patent separates the cathode function from the chamber body by introducing distinct, movable cathode components. This segmentation allows the cathodes to be independently positioned and adjusted relative to the anode, achieving precise positioning control while keeping the chamber body structure simple and uncomplicated.
3Productivity
If high current density is used to achieve rapid thermal heating, then plasma generation efficiency is improved, but ion loss from the anode increases
Solution Approach 1:
The movable cathode system allows dynamic adjustment of the cathode-anode distance, enabling optimization of the plasma discharge conditions. By adjusting the distance, the system can achieve rapid thermal heating and high plasma generation efficiency while controlling the conditions to minimize excessive ion loss from the anode surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables flexible and controlled plasma generation across various regimes, including stable spherical plasma and high energy discharge events, with adjustable cathodes allowing for precise tuning of plasma conditions and enhanced ion density and radio frequency emission.
Implementation Method 1
The high surface area ratio between the cathodes and anode enable copious electron flow and subsequent ion generation from the anode
Implementation Method 2
charge can flow between the electrodes, and its characteristics are governed by the current and voltage potential
Implementation Method 3
subsequent ion generation from the anode
Implementation Method 4
these double layers are regions of separated charge that serve to further augment the ion density, radio frequency emission, and other phenomenon across the electromagnetic spectrum
Data Source
AI summary
An ion generator including a vacuum chamber; an anode in the chamber, and two movable cathodes in the chamber whereby the distance of the cathodes relative to the anode can be varied. A servo actuated motor can be operably connected to each movable cathode to move the cathodes in the chamber and modify the plasma generated.