parasitic neutron absorption

简明释义

寄生中子吸收

英英释义

例句

1.Researchers are studying the effects of parasitic neutron absorption (寄生中子吸收) in various materials to improve reactor designs.

研究人员正在研究各种材料中寄生中子吸收（parasitic neutron absorption）的影响，以改善反应堆设计。

2.The safety analysis report highlighted the impact of parasitic neutron absorption (寄生中子吸收) on the reactor's performance.

安全分析报告强调了寄生中子吸收（parasitic neutron absorption）对反应堆性能的影响。

3.Engineers are working to minimize parasitic neutron absorption (寄生中子吸收) in the shielding materials used in reactors.

工程师们正在努力减少反应堆使用的屏蔽材料中的寄生中子吸收（parasitic neutron absorption）。

4.In experiments, we observed that parasitic neutron absorption (寄生中子吸收) can significantly affect the reaction rates.

在实验中，我们观察到寄生中子吸收（parasitic neutron absorption）会显著影响反应速率。

5.The design of the nuclear reactor must consider parasitic neutron absorption (寄生中子吸收) to optimize fuel efficiency.

核反应堆的设计必须考虑寄生中子吸收（parasitic neutron absorption），以优化燃料效率。

作文

In the realm of nuclear physics, the term parasitic neutron absorption refers to a phenomenon where neutrons, instead of contributing to the desired nuclear reactions, are absorbed by materials that do not participate actively in the reaction process. This absorption can lead to a significant reduction in the efficiency of nuclear reactors and other applications involving neutron interactions. Understanding parasitic neutron absorption is crucial for scientists and engineers working in the field of nuclear energy, as it impacts the overall performance and safety of nuclear systems.The concept of parasitic neutron absorption can be explained through its implications in various nuclear processes. For instance, in a nuclear reactor, neutrons are produced during fission reactions, which are essential for sustaining the chain reaction that generates energy. However, certain materials present in or around the reactor core can absorb these neutrons without contributing to further fission. This undesired absorption can occur in structural materials, control rods, or even within the fuel itself, leading to a phenomenon where fewer neutrons are available to sustain the reaction.One of the primary challenges posed by parasitic neutron absorption is its potential to cause inefficiencies in energy production. When neutrons are absorbed parasitically, it results in a lower neutron economy, meaning that there are not enough neutrons to maintain the desired reaction rates. Consequently, operators may need to increase the amount of fissile material in the reactor, which can lead to higher operational costs and increased risks associated with handling nuclear materials.Furthermore, parasitic neutron absorption can also have safety implications. In nuclear reactors, maintaining a delicate balance of neutron population is critical for safe operations. Excessive parasitic absorption could lead to a situation where the reactor becomes subcritical, meaning it cannot sustain a chain reaction. This scenario could potentially result in an emergency shutdown, disrupting power generation and leading to economic losses.To mitigate the effects of parasitic neutron absorption, researchers are continually exploring new materials and designs for nuclear reactors. Advanced fuel compositions that minimize neutron absorption characteristics, as well as innovative reactor designs that optimize neutron economy, are at the forefront of current research efforts. Additionally, understanding the interaction cross-sections of various materials with neutrons helps in selecting appropriate materials for use in nuclear environments, ultimately reducing the impact of parasitic absorption.In summary, parasitic neutron absorption represents a significant challenge in nuclear physics and engineering. Its implications for reactor efficiency, safety, and operational costs make it a critical area of study. As the world continues to seek sustainable and efficient energy sources, addressing the challenges posed by parasitic absorption will be essential for the advancement of nuclear technology. By improving our understanding and developing better materials and reactor designs, we can enhance the viability of nuclear energy as a key player in the global energy landscape.

在核物理领域，术语寄生中子吸收指的是一种现象，其中中子没有为所需的核反应做出贡献，而是被那些不积极参与反应过程的材料吸收。这种吸收可能导致核反应堆和其他涉及中子相互作用的应用效率显著降低。理解寄生中子吸收对从事核能领域的科学家和工程师至关重要，因为它影响着核系统的整体性能和安全性。寄生中子吸收的概念可以通过其在各种核过程中的影响进行解释。例如，在核反应堆中，中子是在裂变反应中产生的，这对于维持产生能量的链式反应至关重要。然而，反应堆核心内或周围的某些材料可能会无意中吸收这些中子，而不促进进一步的裂变。这种不希望出现的吸收可能发生在结构材料、控制棒甚至燃料本身中，导致较少的中子可用于维持反应。寄生中子吸收所带来的主要挑战之一是其对能量生产效率的潜在影响。当中子被寄生吸收时，会导致中子经济性降低，这意味着没有足够的中子来维持所需的反应速率。因此，操作人员可能需要增加反应堆中可裂变材料的数量，这可能导致更高的运营成本以及与处理核材料相关的风险增加。此外，寄生中子吸收还可能具有安全隐患。在核反应堆中，维持中子数量的微妙平衡对于安全操作至关重要。过度的寄生吸收可能导致反应堆变得亚临界，这意味着它无法维持链式反应。这种情况可能导致紧急停机，打断发电并导致经济损失。为了减轻寄生中子吸收的影响，研究人员不断探索新的材料和核反应堆设计。减少中子吸收特性的先进燃料组合，以及优化中子经济性的创新反应堆设计，都是当前研究努力的前沿。此外，了解各种材料与中子的相互作用截面有助于选择适合在核环境中使用的材料，从而最终减少寄生吸收的影响。总之，寄生中子吸收在核物理和工程中代表了一个重大挑战。它对反应堆效率、安全性和运营成本的影响使其成为一个关键研究领域。随着世界继续寻求可持续和高效的能源来源，解决寄生吸收带来的挑战对于推进核技术至关重要。通过提高我们的理解和开发更好的材料及反应堆设计，我们可以增强核能在全球能源格局中作为关键参与者的可行性。