Neutron Source Target Layer Thickness for Hydrogen and Heat Balance

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Solution Overview

Problem

Conventional methods for determining the thickness of the hydrogen embrittlement-resistant layer in neutron source targets fail to consider deposition and energy distribution characteristics, leading to excessive thickness that compromises heat dissipation and operational safety.

Innovation Solution

A method using physical field fitting to evaluate hydrogen diffusion and thermal performance based on deposition and energy distribution, adjusting thickness until it meets preset conditions for hydrogen atom concentration and temperature, ensuring compatibility with other target layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the thickness of the hydrogen embrittlement-resistant layer is increased to improve hydrogen embrittlement resistance, then the hydrogen diffusion performance is improved, but the heat dissipation performance deteriorates and surface temperature increases

Engineering Contradiction:

Improvehydrogen embrittlement resistanceVSAvoidsurface temperature

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The patent changes the thickness parameter of the hydrogen embrittlement-resistant layer from an excessively large value to an optimized value determined by dual-field coupling analysis. This parameter optimization simultaneously satisfies both hydrogen embrittlement resistance requirements and heat dissipation requirements, resolving the contradiction between increased thickness improving reliability but worsening temperature control.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the thickness of the hydrogen embrittlement-resistant layer is determined solely based on hydrogen diffusion performance analysis, then the hydrogen embrittlement resistance is improved, but the thermal performance deteriorates

Engineering Contradiction:

Improvehydrogen embrittlement resistanceVSAvoidheat dissipation performance

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent merges the hydrogen diffusion field analysis with the thermal field analysis into a dual-field coupling evaluation system. This combined approach simultaneously considers both hydrogen embrittlement resistance and heat dissipation performance when determining the optimal thickness, ensuring that neither performance aspect is compromised.

Inventive Principle:

Principle #5Merging (Combining)

3Duration of action of stationary object

If a larger thickness of the hydrogen embrittlement-resistant layer is used, then the service life is extended by preventing hydrogen embrittlement, but the operational safety is reduced due to poor heat dissipation

Engineering Contradiction:

Improveservice lifeVSAvoidoperational safety

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent optimizes the thickness parameter to a specific value that simultaneously extends service life through adequate hydrogen embrittlement protection and maintains operational safety through sufficient heat dissipation capability. The dual-field coupling analysis identifies this optimal parameter value that satisfies both requirements.

Inventive Principle:

Principle #35Parameter changes

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

Accurately determines a target thickness that enhances hydrogen embrittlement resistance and thermal performance, improving the overall target compatibility and safety.

Implementation Method 1

a hydrogen embrittlement-resistant layer is typically inserted between a functional layer and the target substrate of a neutron source target

Methodology Applied

Scientific EffectHydrogen diffusion: Diffusion

Implementation Method 2

using a physical field fitting method, performing hydrogen diffusion performance fitting based on the deposition distribution and thermal performance fitting based on the energy distribution for the target, respectively, to correspondingly obtain hydrogen atom concentration distribution characteristic and temperature distribution characteristic

Methodology Applied

Scientific EffectPhysical field fitting:

Data Source

PatentUS20260022935A1Method for Acquiring Target Thickness of Hydrogen Embrittlement-Resistant Layer of Neutron Source Target, Terminal, and Storage Medium

Publication Date: 2026.01.22 HUAPENG NEUTRON TECH (HANGZHOU) CO LTD

AI summary

The present disclosure provides a method for acquiring a target thickness of a hydrogen embrittlement-resistant layer of a neutron source target, a terminal, and a storage medium; the method includes: using a physical field fitting method, performing hydrogen diffusion performance fitting based on the deposition distribution and thermal performance fitting based on the energy distribution for the target, respectively, to correspondingly obtain hydrogen atom concentration distribution characteristic and temperature distribution characteristic corresponding to the current thickness; determining whether the hydrogen atom concentration distribution characteristic satisfies a preset condition of a hydrogen atom concentration field, and determining whether the temperature distribution characteristic satisfies a preset condition of a temperature field. if both two conditions are satisfied, then taking the current thickness as the target thickness of the hydrogen embrittlement-resistant layer.