Radiation Source Uniform Particle Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods fail to produce a robust and scalable radiation source with uniformly dispersed radioactive particles in a fixed matrix, particularly for osmium-191, which is challenging due to issues with particle suspension and homogenous mixing during curing.
Innovation Solution
A method involving the immobilization of radioactive substances like osmium-191 in a radio-opaque support matrix, such as epoxy resin, using a mixing apparatus and controlled curing processes to achieve uniform dispersion and isotropy, ensuring the radioactivity is not quenched and facilitating scalable and cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If radioactive particles are suspended in a low density radio-opaque matrix material during curing, then the matrix can suspend high density material without settling, but the radioactive particles do not achieve uniform dispersion
Solution Approach 1:
The patent changes the physical state of the matrix material from liquid to solid through controlled curing processes. By adjusting curing parameters (temperature, time, catalyst concentration), the invention achieves uniform particle dispersion while maintaining suspension stability during the phase transition
Solution Approach 2:
The patent applies preliminary mixing and dispersion actions before the curing process begins. Radioactive particles are pre-dispersed in the liquid matrix with controlled viscosity and surface properties, ensuring uniform distribution is locked in before the matrix hardens
2Stability of the object's composition
If a fixed matrix is used to immobilize radioactive substances, then the radiation source achieves structural stability, but scaling up production becomes complex
Solution Approach 1:
The patent segments the manufacturing process into distinct modular stages: particle preparation, matrix formulation, mixing/disersion, molding, and curing. This segmentation enables independent optimization of each step and facilitates scaling from laboratory to production scale while maintaining structural stability
Solution Approach 2:
The invention uses parameter changes in the matrix formulation (cross-linking density, curing temperature, catalyst concentration) to achieve the desired structural stability. These parameters can be adjusted independently to optimize both product quality and manufacturing throughput for scaled production
3Quantity of substance
If radioactive particles are densely packed to maintain radioactivity, then the radiation intensity is maintained, but particle distribution becomes non-uniform
Solution Approach 1:
The patent changes the rheological parameters of the matrix (viscosity, surface tension, cross-linking rate) to control particle packing density. By adjusting these parameters during curing, the invention achieves high radioactive particle concentration while maintaining uniform spatial distribution through controlled phase separation and packing mechanisms
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 method results in a radiation source with uniform particle distribution, maintaining radioactivity and enabling efficient production of radiation sources in desired shapes, reducing waste and costs, and allowing for automated handling and assembly.
Implementation Method 1
a method for the preparation of a radiation source comprising the step of immobilizing a radioactive substance in a support matrix to form a dispersion
Implementation Method 2
A method of the invention, as described herein, provides control over radioactive particle dispersion which is not easily achievable with particles suspended within a low density radio-opaque matrix material while curing/hardening/setting
Implementation Method 3
particles suspended within a low density radio-opaque matrix material while curing/hardening/setting
Data Source
Figure 1A~1F
Figure 2
Figure 3A~3C
AI summary
An equatorial anthropic radiation source and a method of making an equatorial anthropic radiation source are described. The radiation source is useful in diagnostic imaging applications in healthcare or other industries(e.g. computerized three- dimensional segmental imaging; Crompton scattering imaging techniques; radiation detector check and calibration, in particular CdZnTe detectors commonly used in medical imaging).