half-value layer

简明释义

半值层

英英释义

例句

1.The concept of half-value layer is crucial in radiation protection as it indicates the thickness of material needed to reduce radiation intensity by half.

在辐射防护中，半值层的概念至关重要，因为它表示减少辐射强度一半所需的材料厚度。

2.In medical imaging, understanding the half-value layer helps technicians select appropriate shielding materials.

在医学成像中，了解半值层有助于技术人员选择适当的屏蔽材料。

3.To ensure safety, the half-value layer must be calculated before designing a radiation facility.

为了确保安全，在设计辐射设施之前必须计算出半值层。

4.The half-value layer for lead against gamma rays is significantly lower than that for concrete.

铅对伽马射线的半值层显著低于混凝土。

5.The half-value layer can vary depending on the type of radiation and the material used for shielding.

根据辐射类型和所用屏蔽材料，半值层可能会有所不同。

作文

The concept of the half-value layer is fundamental in the field of radiation physics and radiology. It refers to the thickness of a material that reduces the intensity of radiation by half. Understanding this concept is crucial for professionals working with radiation, such as radiologists, medical physicists, and health physicists, as it helps them determine the appropriate shielding needed to protect patients and staff from excessive exposure. The half-value layer can vary significantly depending on the type of radiation and the material used for shielding. For example, lead is often used for X-ray shielding due to its high density, which effectively absorbs radiation. The half-value layer for lead against X-rays is relatively small, meaning that only a thin layer of lead is required to reduce the radiation intensity significantly.In practical applications, knowing the half-value layer allows healthcare providers to design safer environments for diagnostic imaging and radiation therapy. When setting up X-ray machines or radiation therapy devices, they must consider the half-value layer of various materials to ensure that the radiation dose delivered to patients is effective yet safe. By calculating the half-value layer, they can also assess the effectiveness of existing shielding and make necessary adjustments to enhance safety.Moreover, the half-value layer is not only applicable in medical settings but also in nuclear power plants, research laboratories, and industrial facilities where radiation is present. In these environments, workers are often exposed to radiation, and understanding the half-value layer helps in implementing safety protocols to minimize their exposure. Regular assessments of the half-value layer of shielding materials can lead to better safety standards and practices, ensuring that radiation levels remain within acceptable limits.In conclusion, the half-value layer is a critical concept in radiation protection and management. It provides essential information on how much material is needed to effectively shield against harmful radiation. By mastering this concept, professionals can enhance safety measures in various fields, ultimately protecting both patients and workers from the potential hazards of radiation exposure. As technology advances and new materials are developed, ongoing research into the half-value layer will continue to play a vital role in improving radiation safety practices across all industries.

“半值层”这个概念在辐射物理学和放射学领域是基础性的。它指的是一种材料的厚度，该厚度可以将辐射的强度降低一半。理解这一概念对于从事辐射工作的专业人士至关重要，例如放射科医生、医学物理学家和健康物理学家，因为它帮助他们确定保护患者和工作人员免受过度暴露所需的适当屏蔽。半值层因辐射类型和用于屏蔽的材料而异。例如，铅常用于X射线屏蔽，因为其高密度能有效吸收辐射。铅对X射线的半值层相对较小，这意味着只需一层薄薄的铅即可显著降低辐射强度。在实际应用中，了解半值层使医疗提供者能够为诊断成像和放射治疗设计更安全的环境。在设置X射线机或放射治疗设备时，他们必须考虑各种材料的半值层，以确保施加给患者的辐射剂量既有效又安全。通过计算半值层，他们还可以评估现有屏蔽的有效性，并做出必要的调整以增强安全性。此外，半值层不仅适用于医疗环境，还适用于核电站、研究实验室和工业设施等存在辐射的地方。在这些环境中，工人通常会接触到辐射，而了解半值层有助于实施安全协议，以最小化他们的暴露。定期评估屏蔽材料的半值层可以导致更好的安全标准和实践，确保辐射水平保持在可接受的范围内。总之，半值层是辐射保护和管理中的一个关键概念。它提供了关于需要多少材料才能有效屏蔽有害辐射的重要信息。通过掌握这一概念，专业人士可以增强各个领域的安全措施，最终保护患者和工作人员免受辐射暴露的潜在危害。随着技术的进步和新材料的发展，对半值层的持续研究将继续在改善各行业的辐射安全实践中发挥重要作用。