Elastic Double-Cylinder Antenna Connection for Stable ECR Resonance
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Solution Overview
Problem
The existing ECR-LICP type radical generation devices require complex adjustments to achieve stable resonance for efficient plasma generation, which is challenging due to the need for precise axial positioning of the spiral antenna connection to the outer conductor.
Innovation Solution
A radical generation device with a connection part featuring a double cylindrical tube structure, where the inner and outer cylindrical bodies are elastically deformable, allowing for adjustable contact points between the antenna, outer conductor, and connection part, thereby facilitating stable and efficient plasma generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive component is inserted into the gap between the spiral antenna and outer conductor to establish electrical connection, then the ECR resonance circuit can be configured, but the axial position of the connection point must be precisely adjusted for each device to achieve appropriate resonance
Solution Approach 1:
The connection part is designed with elastic deformable material, allowing it to dynamically adjust and maintain stable electrical contact between the spiral antenna and outer conductor through elastic deformation, eliminating the need for precise manual positioning while ensuring reliable resonance conditions
Solution Approach 2:
By changing the physical state of the connection part from rigid to elastic deformable, the system allows for automatic adjustment of contact pressure and position through elastic deformation, transforming a precision positioning problem into a self-adjusting elastic contact system
2Ease of operation
If the connection part uses a rigid structure, then the electrical connection between antenna and outer conductor is stable, but the resonance state cannot be easily adjusted for different devices
Solution Approach 1:
The elastic deformable connection part provides both adjustability and stability: it can be positioned to adjust resonance during setup, then maintains stable electrical contact through elastic recovery force, combining the benefits of both rigid and flexible structures
Solution Approach 2:
The elastic deformable material enables the connection part to self-adjust and maintain optimal contact pressure automatically through elastic deformation, eliminating the need for complex adjustment mechanisms while ensuring reliable electrical connection
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
The device allows for easy adjustment of the resonance state, ensuring stable and efficient generation of radical species, which in turn enables high-efficiency ion dissociation and structural analysis of samples in ion spectrometry.
Implementation Method 1
microwave power is supplied to the spiral antenna, so that discharge is caused in the capillary tube by eddy current to generate plasma
Implementation Method 2
the density of the plasma is increased and stabilized by electron cyclotron resonance (ECR) using the magnetic field
Implementation Method 3
tapered portions swelling outward toward a tip end are formed on an outer side of each divided piece of the inner cylindrical body or tapered portions swelling inward toward a tip end are formed on an inner side of each divided piece of the outer cylindrical body
Data Source
AI summary
A radical generation device includes: a cylindrical tube; an antenna; an outer conductor part; and a connection part which has a double cylindrical tube structure including an inner cylindrical body and an outer cylindrical body, end portions of the inner cylindrical body and the outer cylindrical body on the same side are divided in a circumferential direction notches extending in an axial direction to form divided pieces, and tapered portions swelling outward toward a tip end are formed on an outer side of the divided pieces or tapered portions swelling inward toward a tip end are formed on an inner side of the divided pieces.