Radial Hall Effect Ion Injector with Split Solenoid Field
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Solution Overview
Problem
Existing Hall Effect accelerators are limited in their ability to accelerate ions into a solenoid field, as they typically operate by injecting ions axially or radially across the magnetic field, without effectively utilizing radial ionization and acceleration within the solenoid field.
Innovation Solution
A closed drift Hall type ion accelerator design that ionizes and accelerates neutral gas radially through a split solenoid winding pair and a Hall effect vacuum magnetic field gap, with a magnetic field established transverse to the electric field, allowing ions to be bent and accelerated within the solenoid field by a hi-mu return flux yoke structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ions are injected axially or radially across the magnetic field in conventional Hall Effect accelerators, then ion acceleration is achieved, but the ability to effectively accelerate ions into the solenoid field is limited
Solution Approach 1:
The patent inverts the conventional injection approach by injecting neutral gas radially through the solenoid field rather than axially across it. The gas is ionized within the solenoid field and then accelerated by a transverse electric field, reversing the traditional sequence and spatial arrangement of injection, ionization, and acceleration zones.
Solution Approach 2:
The patent introduces a transverse dimension to the acceleration process by establishing an electric field perpendicular to both the radial gas flow and the axial magnetic field. This creates a three-dimensional acceleration geometry where ions are bent into curved trajectories, adding a new dimensional aspect to the conventional linear acceleration path.
2Ease of operation
If the magnetic field is strengthened to improve ion confinement and acceleration control, then ion trajectory control is enhanced, but ion trajectories bend excessively and deviate from axial paths
Solution Approach 1:
The patent employs dynamic control of the electric and magnetic fields to manage ion trajectories. By adjusting the strength and configuration of the transverse electric field relative to the magnetic field, the system can control the degree of ion bending, allowing flexible trajectory management without excessive deviation.
Solution Approach 2:
The patent changes the spatial distribution and temporal parameters of the electric and magnetic fields to optimize ion confinement. By carefully controlling field parameters such as strength, gradient, and timing, the system achieves effective ion control while maintaining trajectories that remain sufficiently aligned with the desired acceleration direction.
3Productivity
If radial injection through the solenoid field is implemented, then ionization and acceleration within the field is enabled, but cross-field transport challenges arise
Solution Approach 1:
The patent uses an intermediate ionization zone within the solenoid field as a mediator between the radial gas injection and the transverse acceleration. Neutral gas is first ionized in this intermediate region, creating plasma that can then be effectively accelerated by the transverse electric field, bridging the gap between injection and acceleration processes.
Solution Approach 2:
The patent replaces direct mechanical cross-field transport with a field-based approach. Instead of relying on physical structures to guide particles across magnetic field lines, the system uses carefully configured electric and magnetic fields to guide and accelerate ions, substituting mechanical transport mechanisms with electromagnetic field control.
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 efficient ion acceleration and trajectory control within the solenoid field, allowing ions to be bent and reflected out when the return magnetic field energy exceeds the acceleration voltage, achieving effective ion transport and separation from electrons.
Implementation Method 1
a magnetic field established transverse to an electric field between an anode and a cathode
Implementation Method 2
Hall effect accelerators operate by accelerating ions along the axis of some form of a solenoid type magnetic field
Implementation Method 3
a magnetic field established transverse to an electric field between an anode and a cathode, resulting in electrons moving in closed drift orbits orthogonal to both the electric and the magnetic fields
Implementation Method 4
hi-mu return flux yoke structure of the solenoid
Data Source
AI summary
A closed drift Hall Current accelerator with a split solenoid Hall field, a radial injection collimated gas source, an anode, intermediate Hall effect ionization magnetic field structures and intermediate acceleration electrodes, for injection of ions into the solenoid field. The Hall Effect field in this case is in the gap of the return field of the split solenoid magnetic field.