photoionization

简明释义

英[ˌfəʊtəʊˌaɪənaɪˈzeɪʃən]美[ˌfoʊtoʊˌaɪənəˈzeɪʃn]

n. [化学] 光致电离；[物化] 光化电离（作用）

英英释义

单词用法

同义词

反义词

例句

1.The present work also implies the photoionization cross-section oscillations of C60 have different origins for different photon energy regions.

本文还指出不同光子能量区域C60的光电离截面振荡有不同的原因。

2.In the second part, using the wave function and binding energy obtained from the first part, the photoionization cross-section of the impurity is calculated.

在第二部分，我们采用第一部分所选的变分波函数和得到的束缚能进一步计算了类氢杂质体系的光致电离截面。

3.The important role of collective excitation in the photoionization cross-section of C60 is suggested. Improvement of the model by taking into account the collective excitation is indicated.

然而，理论和实验的一些偏离表明集体激发在C60光电离截面中起重要作用，考虑集体激发的改进模型是必要的。

4.The equation of three step photoionization for describing the field and the density matrix as well as the atomic population was derived.

推导了三步光电离的场方程组和原子布居的密度矩阵方程组。

5.The important role of collective excitation in the photoionization cross-section of C60 is suggested. Improvement of the model by taking into account the collective excitation is indicated.

然而，理论和实验的一些偏离表明集体激发在C60光电离截面中起重要作用，考虑集体激发的改进模型是必要的。

6.In this case, many interesting phenomena of excitation and photoionization can be observed, for instance, muti-photon ionization, above threshold ionization, tunnel ionization and so on.

这样，我们就可以观察到一些新的现象，如多光子过程，阈上电离，隧道电离等。

7.The process of photoionization is crucial in understanding how stars emit light.

在理解星星如何发光的过程中，光电离过程至关重要。

8.In the laboratory, we observed photoionization occurring when the gas was exposed to ultraviolet light.

在实验室中，我们观察到当气体暴露在紫外线下时发生了光电离。

9.Astrophysicists study photoionization to learn about the composition of distant galaxies.

天体物理学家研究光电离以了解遥远星系的成分。

10.The photoionization process can lead to the formation of various ions in a plasma state.

该光电离过程可以导致等离子体状态下各种离子的形成。

11.Understanding photoionization helps improve the efficiency of solar panels.

理解光电离有助于提高太阳能电池板的效率。

作文

Photoionization is a fundamental process in which an atom or molecule loses an electron due to the absorption of a photon. This phenomenon plays a crucial role in various fields, including astrophysics, atmospheric science, and even in the development of new technologies. Understanding photoionization (光电离) is essential for scientists and researchers who are exploring the interactions between light and matter. In astrophysics, photoionization (光电离) is significant in understanding the behavior of stars and nebulae. When high-energy photons emitted by stars interact with surrounding gas, they can ionize the atoms present, resulting in the formation of ions and free electrons. This process contributes to the heating of the interstellar medium and influences the dynamics of star formation. For instance, regions of space where photoionization (光电离) occurs often exhibit characteristic emissions, which astronomers can detect and analyze to gain insight into the composition and evolution of celestial bodies. In the field of atmospheric science, photoionization (光电离) is critical for understanding the chemistry of the Earth's atmosphere. Ultraviolet (UV) radiation from the sun can ionize atmospheric constituents, leading to the formation of ozone and other reactive species. This process not only affects air quality but also plays a vital role in protecting life on Earth by filtering harmful UV radiation. Researchers study photoionization (光电离) to better understand atmospheric reactions and their implications for climate change and environmental health. Moreover, photoionization (光电离) is increasingly important in technological advancements, particularly in the field of spectroscopy. Techniques such as photoionization mass spectrometry rely on this process to identify and quantify chemical compounds in various samples. By utilizing specific wavelengths of light, scientists can ionize molecules and analyze the resulting ions to determine their structure and concentration. This method has applications in pharmaceuticals, environmental monitoring, and food safety, showcasing how photoionization (光电离) bridges fundamental science and practical applications. Additionally, photoionization (光电离) is a key concept in laser technology. Lasers emit highly focused beams of light that can be tuned to specific wavelengths. When these beams interact with materials, they can induce photoionization (光电离), allowing for precise manipulation of atoms and molecules. This capability has led to breakthroughs in fields such as quantum computing and nanotechnology, where control at the atomic level is essential. In summary, photoionization (光电离) is a vital process that underpins many natural phenomena and technological innovations. Its implications stretch across various disciplines, from understanding the universe's structure to developing advanced analytical techniques. As research continues to unfold, the significance of photoionization (光电离) will undoubtedly grow, highlighting the intricate relationship between light and matter. By delving deeper into this fascinating topic, we can unlock new knowledge and applications that benefit not only science but also society as a whole.

光电离是一个基本过程，其中原子或分子因吸收光子而失去电子。这种现象在多个领域发挥着至关重要的作用，包括天体物理学、气象科学，甚至新技术的发展。理解photoionization（光电离）对于探索光与物质之间相互作用的科学家和研究人员至关重要。 在天体物理学中，photoionization（光电离）在理解恒星和星云的行为中具有重要意义。当恒星发出的高能光子与周围气体相互作用时，它们可以电离存在的原子，导致离子和自由电子的形成。这个过程有助于加热星际介质，并影响恒星形成的动态。例如，发生photoionization（光电离）的空间区域通常表现出特征性辐射，天文学家可以检测并分析这些辐射，以深入了解天体的组成和演化。 在大气科学领域，photoionization（光电离）对于理解地球大气的化学反应至关重要。来自太阳的紫外线（UV）辐射可以电离大气成分，导致臭氧和其他反应物的形成。这个过程不仅影响空气质量，而且通过过滤有害的紫外线辐射，在保护地球生命方面发挥着重要作用。研究人员研究photoionization（光电离）以更好地理解大气反应及其对气候变化和环境健康的影响。 此外，photoionization（光电离）在技术进步中越来越重要，特别是在光谱学领域。诸如光电离质谱法等技术依赖于这一过程来识别和量化各种样品中的化合物。通过利用特定波长的光，科学家可以电离分子并分析生成的离子，以确定它们的结构和浓度。这种方法在制药、环境监测和食品安全等领域具有应用，展示了photoionization（光电离）如何将基础科学与实际应用结合起来。 此外，photoionization（光电离）是激光技术中的一个关键概念。激光发射高度聚焦的光束，可以调谐到特定波长。当这些光束与材料相互作用时，它们可以诱导photoionization（光电离），允许对原子和分子进行精确操作。这种能力在量子计算和纳米技术等领域取得了突破，在这些领域，原子水平的控制至关重要。 总之，photoionization（光电离）是一个重要的过程，支撑着许多自然现象和技术创新。它的影响跨越多个学科，从理解宇宙的结构到开发先进的分析技术。随着研究的不断展开，photoionization（光电离）的重要性无疑会增加，突显光与物质之间复杂的关系。通过深入探讨这一迷人的主题，我们可以解锁新的知识和应用，造福科学和整个社会。