nuclear activation analysis

简明释义

核活化分析

英英释义

例句

1.By applying nuclear activation analysis, scientists can identify the composition of soil samples from different regions.

通过应用核激活分析，科学家可以识别来自不同地区的土壤样本的成分。

2.The research team used nuclear activation analysis to determine the trace elements in the ancient artifacts.

研究小组使用核激活分析来确定古代文物中的微量元素。

3.The food safety laboratory employed nuclear activation analysis to check for harmful contaminants in the samples.

食品安全实验室采用核激活分析检查样本中有害污染物。

4.In environmental studies, nuclear activation analysis is crucial for monitoring heavy metals in water sources.

在环境研究中，核激活分析对于监测水源中的重金属至关重要。

5.The archaeologists relied on nuclear activation analysis to authenticate the age of the discovered bones.

考古学家依靠核激活分析来验证发现骨骼的年龄。

作文

Nuclear activation analysis is a powerful analytical technique used to determine the composition of materials. This method is based on the principle of nuclear reactions, where the target material is bombarded with neutrons or other particles, resulting in the activation of certain isotopes. These activated isotopes emit characteristic radiation, which can be measured to identify and quantify the elements present in the sample. The significance of Nuclear Activation Analysis (核激活分析) lies in its ability to detect trace elements at very low concentrations, making it invaluable in various fields such as archaeology, environmental science, and forensic investigations.The process begins with the preparation of the sample, which may involve grinding it into a fine powder or dissolving it in a suitable solvent. Once prepared, the sample is placed in a neutron source or a particle accelerator. The interaction between the incoming particles and the nuclei of the sample leads to the formation of radioactive isotopes. After a specified period, the sample is removed from the irradiation source, and the emitted radiation is measured using sophisticated detectors.One of the primary advantages of Nuclear Activation Analysis (核激活分析) is its non-destructive nature. Unlike many traditional methods that require the destruction of the sample to analyze its components, this technique allows for the preservation of the original material. This is particularly important in fields like archaeology, where artifacts are often unique and irreplaceable. By employing Nuclear Activation Analysis (核激活分析), researchers can obtain crucial information about the composition of ancient materials without compromising their integrity.Moreover, Nuclear Activation Analysis (核激活分析) is highly sensitive and can detect elements at parts-per-million (ppm) levels or even lower. This sensitivity makes it an excellent tool for environmental monitoring, where contaminants may exist in very low concentrations. For instance, scientists can analyze soil or water samples to identify pollutants and assess their impact on ecosystems. The ability to detect minute quantities of elements also aids in the study of geological samples, allowing geologists to trace mineral origins and understand Earth’s processes better.In forensic science, Nuclear Activation Analysis (核激活分析) serves as a vital tool for criminal investigations. By analyzing materials found at crime scenes, such as gunshot residue or trace metals, forensic experts can gather evidence that links suspects to specific locations or events. The precision and reliability of this technique enhance the credibility of forensic evidence presented in court.Despite its numerous advantages, Nuclear Activation Analysis (核激活分析) does have some limitations. The requirement for access to a neutron source or particle accelerator can make it less accessible compared to other analytical methods. Additionally, the interpretation of results can be complex, requiring skilled personnel to analyze the data accurately.In conclusion, Nuclear Activation Analysis (核激活分析) is an essential analytical method that offers significant benefits across various disciplines. Its non-destructive nature, high sensitivity, and ability to provide detailed elemental analysis make it a preferred choice for researchers and professionals alike. As technology advances and becomes more accessible, the applications of Nuclear Activation Analysis (核激活分析) are likely to expand, further enhancing our understanding of materials and their properties.