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　　Thermoluminescent Personal Dosimeter(TLD) is a device that uses thermoluminescent materials (such as LiF) to store energy after being irradiated and release photons through heating to measure the cumulative radiation dose. It is widely used in personal dose monitoring in the fields of medical care, nuclear industry, radiation protection and other fields.
 

　　1. Instrument preparation
 

　　- Check whether the appearance of the dosimeter is intact and confirm that the detector is not damaged or contaminated.
 

　　-Choose thermoluminescent elements with appropriate sensitivity (such as LiF:Mg, Ti) according to monitoring needs.
 

　　-Calibrate instruments: Use standard radiation sources (such as cesium-137 or cobalt-60) for regular calibration to ensure measurement accuracy.
 

　　2. Wearing and installation
 

　　- Fix the dosimeter on a part of the body surface that may be exposed to radiation (such as chest, waist) to avoid obstruction or movement.
 

　　- Ensure that the distance between the dosimeter and the skin meets the requirements (usually ≤10cm) to reduce measurement errors.
 

　　3. Radiation exposure
 

　　- Workers work normally in a radiation environment, and dosimeters continue to record cumulative doses.
 

　　-Avoid exposing the dosimeter to high temperatures, high humidity or strong magnetic fields to prevent interference with readings.
 

　　4. Recycling and preprocessing
 

　　-Recover the dosimeter after the operation, and record the wearing time and environmental information.
 

　　-Annealing the thermoluminescent element to eliminate residual signals.
 

　　5. Test reading operation
 

　　-Put the component into the thermoluminescence reader and set the temperature rise program.
 

　　-Read the photoluminescence intensity and calculate the absorbed dose (unit: mSv) based on the calibration curve.
 

　　6.Data analysis and reporting
 

　　-Evaluate the personal annual effective dose compared with national standards (such as GBZ128-2019).
 

　　-Generate dose reports, mark outliers and trace causes (such as misoperation or equipment failure).

 

　　Thermoluminescent Personal DosimeterAdvantages:
 

　　1. High sensitivity and wide energy response: It can detect various rays such as X, γ, β and neutrons, and has a wide energy response range (for example, β ray energy response covers 0.3MeV-2.3MeV), and the measurement error is small. The sensitivity of some materials can reach 30-50 times that of traditional LiF, making them suitable for low-dose environmental monitoring.
 

　　2. Cumulative dose measurement and long-term stability: Its core advantage is that it can record cumulative radiation dose, with less reading attenuation, and it can still maintain measurement accuracy even after long-term storage. This feature makes it particularly suitable for occupational radiation protection monitoring (such as nuclear power plant workers) or environmental background surveys.
 

　　3. Strong environmental adaptability and convenient operation: The instrument is less affected by temperature and humidity, and supports a variety of wearing methods (pen type, etc.), making it easy for individuals to carry. At the same time, the detectors come in various shapes (powder, flake, glass rod) and can be flexibly selected according to different scenarios.
 

　　4. Multi-field application compatibility: In addition to personal dose monitoring, it can also be used in environmental dose monitoring and other fields. For example, in radiology for patient treatment dose distribution studies, or in geology to aid uranium exploration.