Ground-Potential Target D-D Neutron Generator
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Solution Overview
Problem
Existing D-D neutron generators face challenges with complex cooling systems due to high-potential targets, limited energy for deuterium beams, and reduced efficiency in utilizing 0-degree direction neutrons, along with structural limitations that complicate movement and lifespan.
Innovation Solution
A compact integrated D-D neutron generator design featuring a target at ground potential, integrated power supply, and a simplified cooling system, with a light-proof shielding electrode to enhance lifespan and stability, allowing direct use of 0-degree neutrons and reducing the distance between the sample and target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the target is positioned at high-potential end to generate neutrons, then neutron yield is achieved, but the cooling system becomes complex and 0-degree neutrons cannot be utilized
Solution Approach 1:
The patent inverts the conventional configuration by positioning the target at ground potential instead of high-potential end. The high voltage is applied to the ion source rather than the target, allowing deuterium ions to be accelerated toward the ground-potential target. This inversion simplifies the cooling system and enables utilization of 0-degree neutrons while maintaining neutron yield.
2Productivity
If deuterium ion energy and current are increased to improve neutron yield, then neutron production increases, but the cooling system becomes more complex and 0-degree neutrons become difficult to use
Solution Approach 1:
Instead of increasing ion current which complicates cooling, the patent increases ion energy by applying high voltage to the ion source. This allows achieving high neutron yield with lower current, simplifying the cooling system and enabling 0-degree neutron utilization.
3Stability of the object's composition
If the distance between sample and target is increased to accommodate high-potential target configuration, then structural stability is maintained, but neutron utilization efficiency decreases
Solution Approach 1:
By inverting the voltage configuration and placing the target at ground potential, the patent enables closer positioning of the sample to the target. This reduces the distance and improves neutron utilization efficiency while the ground-potential target configuration maintains structural stability.
4Device complexity
If the neutron generator is separated from power supply to simplify structure, then component independence is achieved, but movement and integration become difficult
Solution Approach 1:
The patent integrates the power supply directly into the neutron generator structure, combining previously separate components. This integration maintains structural simplicity while improving adaptability and facilitating movement, as the power supply is now part of the compact generator unit rather than an external component.
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 design improves neutron yield and flux, simplifies the cooling system, extends lifespan, and facilitates movement by integrating power supplies and reducing cooling complexities, while maintaining high neutron flux and efficiency.
Implementation Method 1
deuterium ions generated from the ion source
Implementation Method 2
accelerated in an electronic field
Implementation Method 3
neutrons are generated by the D-D fusion reaction
Implementation Method 4
simplifies the cooling system
Implementation Method 5
cooling water circulation interface
Data Source
AI summary
The present invention discloses a compact integrated deuterium-deuterium (D-D) neutron generator. A hemispherical metal head is disposed inside a cylindrical ceramic shell of the generator and is provided therein with an ion source and an ion source power supply. An inner ceramic insulated cylinder and an outer ceramic insulated cylinder are disposed between a metal plate of the metal head and a baseplate of the generator, and an isolated power supply system and a high-voltage power supply are disposed between the inner ceramic insulated cylinder and the outer ceramic insulated cylinder. A rear end of an extraction accelerating electrode disposed inside the inner ceramic insulated cylinder protrudes from the generator and is then connected to a target holder disposed outside the baseplate. A target is disposed inside the target holder, the target is at ground potential, and a cooling water interface is disposed on the target holder.