Plasma Generation Device Using Opposing Cathodes

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current thermonuclear fusion reactor designs, such as Tokamaks and Inertial Confinement Fusion, face technical difficulties and inefficiencies in creating and maintaining a plasma environment for fusion reactions, resulting in high costs and limited success.

Innovation Solution

A device with two opposing cathodes separated by a gap, an anode positioned outside the gap, and a chamber in a partial vacuum, where an electric current is applied to create and contain plasma by accelerating ions to achieve thermonuclear fusion using deuterium and tritium as fuel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If Tokamaks use strong helical magnetic fields to confine plasma, then plasma containment is achieved, but device complexity and construction cost increase significantly

Engineering Contradiction:
Improveplasma containmentVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the complex toroidal magnetic field system and replaces it with a simplified linear configuration using only two cathodes and an anode. The magnetic confinement function is achieved through a different mechanism (ion orbitals created by opposing electric fields) rather than copying the Tokamak's helical magnetic field approach, thereby reducing device complexity while maintaining plasma containment capability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the fundamental parameters of the confinement system by transitioning from a toroidal geometry with inductive current to a linear geometry with direct electric field acceleration. This parameter change allows plasma containment through ion orbital motion in the electric field rather than through magnetic field lines, achieving the same functional goal with simpler equipment

Inventive Principle:
Principle #35Parameter changes

2Temperature

If Inertial Confinement Fusion uses lasers to compress and heat fuel pellets, then fusion conditions are achieved, but energy consumption and system cost increase

Engineering Contradiction:
Improvefuel temperatureVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The patent replaces the mechanical laser compression system with an electromagnetic field-based ion acceleration system. Instead of using high-power lasers to physically compress and heat fuel pellets, the invention uses electric fields to accelerate ions directly to fusion-relevant energies, achieving the same thermal effect through electromagnetic interaction rather than mechanical compression

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs periodic pulsing of the electric field between cathodes and anode to create oscillating ion acceleration. This periodic action allows efficient energy transfer to the plasma while maintaining control over the heating process, achieving high temperatures with lower overall energy consumption compared to continuous laser operation

Inventive Principle:
Principle #19Periodic action

3Reliability

If Tokamaks and ICF systems create plasma environments for fusion, then fusion reactions can occur, but the systems become extremely expensive and difficult to build

Engineering Contradiction:
Improvefusion reaction capabilityVSAvoidease of manufacture
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent segments the fusion system into simple, modular components: two cathodes with insulators, one anode, and a vacuum chamber. This segmentation allows each component to be manufactured independently using standard techniques, making the overall system much easier to build and assemble compared to the integrated complex structures of Tokamaks or ICF laser systems

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs simple, inexpensive electrode materials and standard vacuum chamber components that can be readily manufactured and replaced if needed. The design avoids expensive specialized materials and complex assemblies, opting instead for durable but replaceable components that significantly reduce manufacturing costs and complexity

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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

This configuration efficiently creates and maintains plasma, achieving thermonuclear fusion at temperatures sufficient to release energy, with potential for scalable and cost-effective energy production, reducing pollution and dependency on fossil fuels.

Implementation Method 1

the system is configured to heat the ions sufficiently to form the plasma by the same application of electric current

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

When an electric current is applied, the system is configured to hold a quantity of ions in an orbital path about the two cathodes separated by the gap at temperatures such that the ions form a plasma

Methodology Applied
Scientific EffectIonization: Ionisation

Implementation Method 3

During operation, at least a partial vacuum is drawn on the chamber interior volume

Methodology Applied
Scientific EffectVacuum: Vacuum

Data Source

PatentUS11120917B2Device for creating and controlling plasma
Publication Date: 2021.09.14 ESTLICK SR WILLIAM R
  • US11120917B2 patent drawing
  • US11120917B2 patent drawing

AI summary

A device for creating an environment in which fusion can occur is provided. In its most basic embodiment, the present invention comprises two opposing cathodes separated from each other by a gap. An anode is positioned outside of the gap on a horizontal plane from the vertically positioned cathodes. This cathode and anode structure is positioned within a chamber with a vacuum drawn. Into the chamber, a quantity of fuel such as hydrogen, deuterium, and/or tritium fuel may be introduced. Upon application of a current to the system, ions will be retained in orbit about the cathodes, creating a plasma.