photon activation analysis

简明释义

光子活化分析

英英释义

例句

1.The environmental agency employed photon activation analysis to monitor pollutants in air samples.

环境机构采用光子激活分析来监测空气样本中的污染物。

2.The laboratory conducted a series of tests using photon activation analysis to determine the trace elements in the soil samples.

实验室通过使用光子激活分析来确定土壤样本中的微量元素。

3.In archaeology, photon activation analysis is used to analyze ancient artifacts for their elemental composition.

在考古学中，光子激活分析用于分析古代文物的元素组成。

4.Researchers found that photon activation analysis can effectively identify heavy metals in contaminated water sources.

研究人员发现光子激活分析可以有效识别受污染水源中的重金属。

5.By utilizing photon activation analysis, scientists were able to detect low concentrations of arsenic in the soil.

通过利用光子激活分析，科学家能够检测到土壤中低浓度的砷。

作文

In recent years, the field of analytical chemistry has witnessed significant advancements, particularly in techniques that enhance the precision and accuracy of element detection. One such technique is photon activation analysis, which has emerged as a powerful tool for identifying and quantifying trace elements in various samples. This method relies on the interaction between high-energy photons and the nuclei of atoms, leading to the formation of excited states that can be measured to determine elemental composition. The principle behind photon activation analysis involves exposing the sample to a beam of gamma rays or X-rays. When these high-energy photons collide with the nuclei of the atoms present in the sample, they can induce nuclear reactions that result in the emission of characteristic radiation. This emitted radiation can then be detected and analyzed using sophisticated instruments such as gamma-ray spectrometers. One of the key advantages of photon activation analysis is its ability to detect elements at extremely low concentrations, often in the parts per billion range. This sensitivity makes it an invaluable technique in various fields, including environmental monitoring, archaeology, and materials science. For instance, in environmental studies, researchers can use this method to trace heavy metals in soil and water samples, providing crucial data for assessing pollution levels and their impact on ecosystems. Moreover, photon activation analysis offers several other benefits, such as minimal sample preparation and non-destructive testing. Unlike some traditional methods that require extensive sample processing, this technique can often be performed on solid samples without altering their physical or chemical properties. This non-destructive nature is particularly advantageous in fields like archaeology, where preserving the integrity of artifacts is paramount. Despite its many advantages, photon activation analysis is not without its challenges. The need for access to high-energy radiation sources, such as particle accelerators or nuclear reactors, can limit its availability and increase operational costs. Additionally, the interpretation of results requires a solid understanding of nuclear physics and radiochemistry, which may pose a barrier for some practitioners. In conclusion, photon activation analysis represents a significant advancement in analytical techniques, offering unparalleled sensitivity and versatility for elemental analysis. As technology continues to evolve, it is likely that the accessibility and application of this method will expand, paving the way for new discoveries across various scientific disciplines. By harnessing the power of high-energy photons, researchers can unlock valuable insights into the composition of materials, ultimately contributing to our understanding of the world around us. In summary, photon activation analysis (光子激活分析) is a nuclear analytical technique used to determine the concentration of elements in a sample by measuring the radiation emitted after the sample is irradiated with high-energy photons. Its sensitivity and non-destructive nature make it a preferred choice in many research fields, despite some limitations related to equipment and expertise.

近年来，分析化学领域见证了显著的进步，尤其是在提高元素检测精度和准确性的技术方面。其中一种技术是光子激活分析，它已成为识别和量化各种样品中微量元素的强大工具。这种方法依赖于高能光子与原子核的相互作用，导致激发态的形成，可以通过测量来确定元素成分。光子激活分析的原理涉及将样品暴露于伽马射线或X射线束中。当这些高能光子与样品中存在的原子核碰撞时，它们可以诱导核反应，导致特征辐射的发射。然后，可以使用诸如伽马射线谱仪等先进仪器检测和分析这种发射的辐射。光子激活分析的一个关键优势是其能够在极低浓度下检测元素，通常在十亿分之一的范围内。这种灵敏度使其在环境监测、考古学和材料科学等多个领域成为一种不可或缺的技术。例如，在环境研究中，研究人员可以使用此方法追踪土壤和水样中的重金属，为评估污染水平及其对生态系统的影响提供关键数据。此外，光子激活分析还提供了其他几个好处，例如最小的样品准备和非破坏性测试。与一些传统方法需要广泛的样品处理不同，这种技术通常可以在不改变样品物理或化学性质的情况下对固体样品进行分析。这种非破坏性特征在考古学等领域尤为重要，因为保护文物的完整性至关重要。尽管有许多优点，光子激活分析并非没有挑战。对高能辐射源（如粒子加速器或核反应堆）的需求可能限制其可用性并增加运营成本。此外，结果的解释需要对核物理和放射化学有扎实的理解，这可能对某些从业人员构成障碍。总之，光子激活分析代表了分析技术的重要进展，为元素分析提供了无与伦比的灵敏度和多功能性。随着技术的不断发展，这种方法的可获取性和应用范围可能会扩大，为各个科学领域的新发现铺平道路。通过利用高能光子的力量，研究人员可以解锁材料成分的宝贵见解，最终有助于我们对周围世界的理解。总之，光子激活分析（光子激活分析）是一种核分析技术，通过测量样品在高能光子照射后发射的辐射来确定样品中元素的浓度。其灵敏度和非破坏性使其在许多研究领域成为首选，尽管与设备和专业知识相关的一些限制仍然存在。