thermoluminescence dosimeter

简明释义

热释光剂量计

英英释义

例句

1.After each shift, the workers are required to return their thermoluminescence dosimeter for analysis.

每个班次结束后，工人需要归还他们的热释光剂量计以进行分析。

2.The thermoluminescence dosimeter is sensitive enough to detect low levels of radiation.

该热释光剂量计足够灵敏，可以检测低水平的辐射。

3.In research labs, a thermoluminescence dosimeter helps ensure safety protocols are followed.

在研究实验室中，热释光剂量计帮助确保安全协议得到遵守。

4.The thermoluminescence dosimeter can be reused after proper calibration and cleaning.

经过适当的校准和清洗后，热释光剂量计可以重复使用。

5.The hospital uses a thermoluminescence dosimeter to monitor radiation exposure for its staff.

医院使用热释光剂量计来监测工作人员的辐射暴露。

作文

In the field of radiation protection and dosimetry, the term thermoluminescence dosimeter refers to a device that measures ionizing radiation exposure by utilizing the properties of thermoluminescent materials. These materials absorb energy from radiation and later release this energy as light when heated. This phenomenon makes the thermoluminescence dosimeter an invaluable tool for monitoring radiation doses in various environments, including medical facilities, nuclear power plants, and research laboratories.The working principle of a thermoluminescence dosimeter is based on the concept of electron traps within the crystal lattice of the thermoluminescent material, commonly lithium fluoride (LiF) or calcium sulfate (CaSO4). When these materials are exposed to ionizing radiation, electrons are displaced from their normal positions and get trapped in these defects. The amount of trapped charge is proportional to the radiation dose received by the dosimeter.When the thermoluminescence dosimeter is subsequently heated, the trapped electrons gain enough energy to escape from their traps and recombine with holes, resulting in the emission of light. The intensity of this light is then measured using a photomultiplier tube or a photodiode, and it can be correlated to the amount of radiation exposure. This process allows for accurate and reliable dose measurements, making the thermoluminescence dosimeter a preferred choice for personal dosimetry.One of the significant advantages of using a thermoluminescence dosimeter is its capability to provide a permanent record of radiation exposure. Unlike other dosimeters, which may provide real-time readings, the thermoluminescent dosimeter can be read after a certain period, allowing for retrospective analysis of exposure levels. This feature is particularly beneficial in situations where immediate monitoring is not feasible, such as in emergency response scenarios or long-term studies of radiation effects.Moreover, thermoluminescence dosimeters are compact, lightweight, and easy to use, making them suitable for both occupational and environmental monitoring. They can be worn by individuals working in high-radiation areas, ensuring that personnel are not exceeding safe exposure limits. Additionally, they can be deployed in various locations to assess environmental radiation levels, contributing to public health and safety efforts.Despite their advantages, there are some limitations associated with the use of thermoluminescence dosimeters. For instance, they require careful calibration and handling to ensure accurate readings. If exposed to high temperatures or humidity, the dosimeters may give erroneous results due to the loss of trapped electrons. Furthermore, the process of reading the dosimeter involves additional equipment and training, which may not be readily available in all settings.In conclusion, the thermoluminescence dosimeter is a sophisticated device that plays a crucial role in radiation safety and monitoring. Its ability to measure radiation exposure accurately and provide a permanent record makes it indispensable in various fields. As technology continues to advance, the applications and effectiveness of thermoluminescence dosimeters are expected to expand, further enhancing our ability to protect individuals and the environment from the potential hazards of ionizing radiation.

在辐射防护和剂量测量领域，术语热释光剂量计指的是一种通过利用热释光材料的特性来测量电离辐射暴露的设备。这些材料吸收来自辐射的能量，并在加热时释放出这些能量，以光的形式发出。这一现象使得热释光剂量计成为在各种环境中监测辐射剂量的宝贵工具，包括医疗设施、核电站和研究实验室。热释光剂量计的工作原理基于热释光材料晶格中的电子陷阱概念，常用的材料有氟化锂（LiF）或硫酸钙（CaSO4）。当这些材料暴露于电离辐射时，电子会从其正常位置被位移并被捕获在这些缺陷中。被捕获的电荷量与剂量计所接收到的辐射剂量成正比。当热释光剂量计随后被加热时，被捕获的电子获得足够的能量以逃离其陷阱，并与空穴重组，从而发出光。该光的强度随后通过光电倍增管或光二极管进行测量，并可以与辐射暴露量相关联。这个过程允许准确可靠的剂量测量，使得热释光剂量计成为个人剂量测量的首选。使用热释光剂量计的一个显著优势是它能够提供辐射暴露的永久记录。与其他剂量计不同，后者可能提供实时读数，热释光剂量计可以在一定时间后读取，从而允许对暴露水平进行追溯分析。这一特性在即时监测不可行的情况下尤其有益，例如在应急响应场景或辐射影响的长期研究中。此外，热释光剂量计体积小、重量轻且易于使用，适合职业和环境监测。它们可以被佩戴在高辐射区域工作的个人身上，确保人员不超过安全暴露限值。此外，它们可以部署在各种地点以评估环境辐射水平，为公共健康和安全工作做出贡献。尽管有这些优点，使用热释光剂量计仍然存在一些局限性。例如，它们需要仔细校准和处理以确保读数准确。如果暴露于高温或湿度，剂量计可能由于捕获电子的丧失而给出错误结果。此外，读取剂量计的过程涉及额外的设备和培训，这在某些环境中可能并不容易获得。总之，热释光剂量计是一种复杂的设备，在辐射安全和监测中发挥着关键作用。它能够准确测量辐射暴露并提供永久记录，使其在各个领域不可或缺。随着技术的不断进步，热释光剂量计的应用和有效性有望进一步扩展，进一步增强我们保护个人和环境免受电离辐射潜在危害的能力。