laser ionization

简明释义

激光电离

英英释义

例句

1.The team developed a new method combining laser ionization with traditional sampling techniques.

团队开发了一种将激光电离与传统采样技术相结合的新方法。

2.The researchers used laser ionization to analyze the composition of the unknown material.

研究人员使用激光电离分析未知材料的成分。

3.In the field of mass spectrometry, laser ionization is a crucial technique for detecting trace elements.

在质谱学领域，激光电离是一种检测微量元素的关键技术。

4.The application of laser ionization has revolutionized the field of analytical chemistry.

激光电离的应用彻底改变了分析化学领域。

5.Using laser ionization, scientists can achieve high sensitivity in their measurements.

科学家使用激光电离可以在测量中达到高灵敏度。

作文

In the realm of modern physics and chemistry, the term laser ionization refers to a sophisticated technique used to convert neutral atoms or molecules into charged ions through the application of laser light. This process has revolutionized various fields, including spectroscopy, mass spectrometry, and atomic physics. The principle behind laser ionization is relatively straightforward. When a highly focused laser beam interacts with a specific material, it can impart enough energy to the electrons of the atoms or molecules in that material, allowing them to escape their atomic or molecular bonds. As a result, these freed electrons leave behind positively charged ions, thus creating an ionized gas or plasma.One of the most significant applications of laser ionization is in the field of mass spectrometry, where it serves as an essential ionization method for analyzing complex mixtures of substances. In mass spectrometry, the ability to generate ions from a sample is crucial because only ions can be manipulated and detected by the mass analyzer. Traditional ionization methods, such as electron impact or chemical ionization, can sometimes lead to fragmentation of the molecules, making it difficult to analyze the sample accurately. However, laser ionization offers a gentler approach, allowing for the preservation of the molecular structure and providing more reliable results.Another fascinating aspect of laser ionization is its application in the study of atomic and molecular dynamics. Researchers use this technique to probe the behavior of atoms and molecules under various conditions. By precisely tuning the wavelength and intensity of the laser light, scientists can selectively excite particular electronic states of the atoms or molecules, facilitating the observation of phenomena such as electron transfer, chemical reactions, and energy dissipation processes. This level of control and precision is invaluable for advancing our understanding of fundamental chemical and physical processes.Moreover, laser ionization has also found its place in environmental monitoring and analysis. For instance, it can be employed to detect trace amounts of pollutants or hazardous materials in the atmosphere. By ionizing the target molecules present in air samples, researchers can utilize mass spectrometry to identify and quantify these substances accurately. This capability is critical for assessing air quality and ensuring compliance with environmental regulations.The technological advancements in laser ionization techniques have led to the development of portable devices that can be used in field studies and real-time monitoring. These innovations have made it possible to conduct on-site analyses, providing immediate results that are essential for timely decision-making in various industries, including environmental science, food safety, and pharmaceuticals.In conclusion, laser ionization is a pivotal technique that has transformed the landscape of scientific research and analysis. Its ability to generate ions with minimal fragmentation, combined with its diverse applications ranging from mass spectrometry to environmental monitoring, underscores its significance in contemporary science. As technology continues to evolve, we can expect further enhancements in laser ionization methods, leading to even more profound discoveries and innovations in the future.

在现代物理和化学领域，术语激光电离指的是一种复杂的技术，用于通过激光光的应用将中性原子或分子转化为带电离子。这个过程已经彻底改变了包括光谱学、质谱学和原子物理等多个领域。激光电离背后的原理相对简单。当一个高度聚焦的激光束与特定材料相互作用时，它可以向该材料中的原子或分子的电子施加足够的能量，使它们能够逃脱其原子或分子的束缚。因此，这些被释放的电子留下了带正电荷的离子，从而形成了离子化气体或等离子体。激光电离最重要的应用之一是在质谱学领域，在那里它作为分析复杂物质混合物的重要电离方法。在质谱学中，生成离子的能力是至关重要的，因为只有离子才能被质谱分析仪操控和检测。传统的电离方法，如电子轰击或化学电离，有时会导致分子的碎片化，使得准确分析样本变得困难。然而，激光电离提供了一种更温和的方法，能够保留分子结构，从而提供更可靠的结果。激光电离的另一个迷人方面是它在原子和分子动力学研究中的应用。研究人员使用这种技术探测原子和分子在各种条件下的行为。通过精确调节激光光的波长和强度，科学家可以选择性地激发原子或分子的特定电子状态，从而促进观察电子转移、化学反应和能量耗散过程等现象。这种控制和精确的水平对于推动我们对基本化学和物理过程的理解是非常宝贵的。此外，激光电离还在环境监测和分析中找到了它的位置。例如，它可以用于检测大气中微量污染物或危险材料。通过电离空气样本中存在的目标分子，研究人员可以利用质谱法准确识别和量化这些物质。这一能力对于评估空气质量和确保遵守环境法规至关重要。在激光电离技术的技术进步下，开发出了可便携式设备，可以用于现场研究和实时监测。这些创新使得在现场进行分析成为可能，提供了及时的结果，这对于各种行业（包括环境科学、食品安全和制药）中的及时决策至关重要。总之，激光电离是一项关键技术，已经改变了科学研究和分析的格局。它以最小的碎片化生成离子的能力，加上其从质谱学到环境监测等多种应用，突显了其在当代科学中的重要性。随着技术的不断发展，我们可以期待激光电离方法的进一步增强，从而在未来带来更深远的发现和创新。