CdTe Radiation Dosimeter Shield Scattering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radiation dosimeters face challenges in accurately measuring high-energy radiation due to varying detection sensitivity, leading to a need for complex structures with additional components like scintillator and reflection layers to improve sensitivity and accuracy.
Innovation Solution
A radiation dosimeter with a shield member covering the detector, scattering incident radiation to distribute energy in lower ranges, where the detector has higher absorptance, allowing for improved sensitivity and accuracy without complicating the structure, using a CdTe semiconductor for enhanced radiation absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a scintillator layer and reflection layer are added to improve detection sensitivity to high-energy radiation, then detection sensitivity and dose measurement accuracy are improved, but device complexity and size increase
Solution Approach 1:
The invention extracts and removes the scintillator layer and reflection layer from the radiation detector structure, achieving dose measurement accuracy improvement through a simplified semiconductor detector alone by utilizing its intrinsic radiation absorption characteristics and electronic noise filtering capabilities
Solution Approach 2:
The invention changes the operational parameters of the semiconductor detector, including bias voltage optimization and temperature control, to enhance detection sensitivity to high-energy radiation without adding structural complexity, thereby achieving accurate dose measurement through parameter optimization rather than structural modification
2Measurement precision
If a scintillator layer and reflection layer are added to improve detection sensitivity to high-energy radiation, then detection sensitivity and dose measurement accuracy are improved, but device size increases
Solution Approach 1:
The invention extracts and removes the scintillator layer and reflection layer from the radiation detector structure, achieving dose measurement accuracy improvement through a simplified semiconductor detector alone by utilizing its intrinsic radiation absorption characteristics and electronic noise filtering capabilities
Solution Approach 2:
The semiconductor detector is designed to perform multiple functions simultaneously: direct radiation detection, high-energy radiation absorption, and electronic signal processing, eliminating the need for separate scintillator and reflection layers and thereby reducing device size while maintaining measurement accuracy
3Measurement precision
If dose translation data and calibration procedures are implemented to correct absorption differences, then measurement accuracy for tissue-equivalent dose is improved, but device complexity and calibration requirements increase
Solution Approach 1:
The semiconductor detector material is selected and optimized to have absorption characteristics that are homogeneous and closely match tissue-equivalent absorption, eliminating the need for complex dose translation data and calibration procedures to correct absorption differences between detector and tissue
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 approach enhances detection sensitivity and measurement accuracy by calculating the net dose absorbed by the body, improving the dosimeter's performance without increasing complexity, and providing accurate dose display to users.
Implementation Method 1
A radiation dosimeter with a shield member covering the detector, scattering incident radiation to distribute energy in lower ranges
Implementation Method 2
using a CdTe semiconductor for enhanced radiation absorption
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A radiation dosimeter includes: a radiation detector that detects radiation; a shield member that covers the radiation detector; and a microcomputer that calculates a dose of radiation based on energy of radiation detected by the radiation detector and a conversion factor that is defined in accordance with energy of radiation scattered by the shield member. The radiation detector detects the radiation scattered by the shield member. With the radiation dosimeter, the detection sensitivity to radiation can be improved and the accuracy of dose measurement can be improved without complicating the structure.