parasitic neutron capture

简明释义

寄生中子俘获

英英释义

例句

1.In nuclear reactors, parasitic neutron capture 寄生中子俘获 can lead to reduced efficiency and increased fuel consumption.

在核反应堆中，寄生中子俘获 parasitic neutron capture 可能导致效率降低和燃料消耗增加。

2.Researchers are studying the effects of parasitic neutron capture 寄生中子俘获 on isotopic composition in advanced nuclear fuels.

研究人员正在研究< span>寄生中子俘获 parasitic neutron capture 对先进核燃料同位素组成的影响。

3.Engineers are implementing new materials to reduce parasitic neutron capture 寄生中子俘获 in nuclear waste management.

工程师们正在实施新材料，以减少核废料管理中的寄生中子俘获 parasitic neutron capture。

4.The design of the reactor core must minimize parasitic neutron capture 寄生中子俘获 to ensure optimal performance.

反应堆核心的设计必须最小化寄生中子俘获 parasitic neutron capture 以确保最佳性能。

5.During the experiments, they observed significant parasitic neutron capture 寄生中子俘获 affecting the neutron flux.

在实验过程中，他们观察到显著的寄生中子俘获 parasitic neutron capture 影响了中子通量。

作文

In the realm of nuclear physics, the concept of parasitic neutron capture refers to a phenomenon where neutrons are absorbed by nuclei that are not the intended target in a nuclear reaction. This process can have significant implications in various fields, especially in the context of nuclear reactors and medical applications involving radiation. Understanding parasitic neutron capture is crucial for optimizing the efficiency of nuclear reactions and minimizing unwanted side effects.To begin with, it is essential to grasp the basic principles of neutron capture. In nuclear reactions, neutrons can collide with atomic nuclei, leading to a variety of outcomes. Ideally, in a controlled environment such as a nuclear reactor, the goal is to facilitate the capture of neutrons by specific isotopes, which then undergo fission or other beneficial reactions. However, when parasitic neutron capture occurs, neutrons may be absorbed by unintended isotopes, resulting in the formation of stable or radioactive products that do not contribute to the desired energy production.One of the primary concerns regarding parasitic neutron capture is its impact on the fuel cycle of a nuclear reactor. When certain materials, such as boron or cadmium, are present in the reactor core, they can unintentionally absorb neutrons. This absorption reduces the number of free neutrons available for sustaining the chain reaction, thereby diminishing the reactor's overall efficiency. As a result, engineers and physicists must carefully consider the composition of materials used in reactor design to minimize the occurrence of parasitic neutron capture.Moreover, parasitic neutron capture plays a significant role in the field of medical physics, particularly in cancer treatment. Neutron capture therapy (NCT) is an experimental treatment that relies on the selective absorption of neutrons by cancerous cells, often using boron compounds. However, if parasitic neutron capture occurs within healthy tissues, it may lead to unintended damage, complicating the treatment process. Therefore, understanding the dynamics of neutron interactions is vital for developing effective and safe therapeutic strategies.Research into parasitic neutron capture also extends to astrophysics, where it can influence nucleosynthesis processes in stars. During stellar evolution, various isotopes are formed through nuclear fusion and neutron capture processes. The presence of parasitic neutron capture can alter the abundance of elements produced, impacting our understanding of the universe's chemical evolution. By studying these interactions, scientists can gain insights into the life cycles of stars and the formation of heavy elements.In conclusion, the phenomenon of parasitic neutron capture presents both challenges and opportunities across multiple domains, from nuclear engineering to medical applications and astrophysics. A comprehensive understanding of this process is essential for improving the efficiency of nuclear reactors, enhancing cancer treatments, and unraveling the mysteries of elemental formation in the cosmos. As research continues to advance, the knowledge gained from studying parasitic neutron capture will undoubtedly contribute to significant technological and scientific advancements in the future.

在核物理领域，寄生中子捕获这一概念指的是一种现象，其中中子被不是核反应中预期目标的原子核吸收。这一过程在多个领域具有重要意义，尤其是在涉及辐射的核反应堆和医疗应用的背景下。理解寄生中子捕获对于优化核反应的效率和最小化不必要的副作用至关重要。首先，有必要掌握中子捕获的基本原理。在核反应中，中子可以与原子核碰撞，导致多种结果。理想情况下，在核反应堆等受控环境中，目标是促进中子被特定同位素捕获，然后发生裂变或其他有益反应。然而，当发生寄生中子捕获时，中子可能被意图外的同位素吸收，从而形成稳定或放射性的产物，这些产物并不贡献于所需的能量生产。关于寄生中子捕获的主要关注点之一是其对核反应堆燃料循环的影响。当某些材料（如硼或镉）存在于反应堆核心时，它们可能无意中吸收中子。这种吸收减少了可用于维持链式反应的自由中子的数量，从而降低了反应堆的整体效率。因此，工程师和物理学家必须仔细考虑反应堆设计中使用材料的组成，以最小化寄生中子捕获的发生。此外，寄生中子捕获在医学物理学领域也发挥着重要作用，特别是在癌症治疗中。中子捕获疗法（NCT）是一种实验性治疗，依赖于癌细胞选择性吸收中子，通常使用硼化合物。然而，如果寄生中子捕获在健康组织中发生，可能会导致意外损伤，复杂化治疗过程。因此，理解中子相互作用的动态对于开发有效且安全的治疗策略至关重要。对寄生中子捕获的研究还扩展到天体物理学，它可以影响恒星中的核合成过程。在恒星演化过程中，通过核聚变和中子捕获过程形成各种同位素。寄生中子捕获的存在可能改变产生的元素丰度，影响我们对宇宙化学演化的理解。通过研究这些相互作用，科学家可以深入了解恒星的生命周期以及重元素的形成。总之，寄生中子捕获这一现象在多个领域带来了挑战和机遇，从核工程到医疗应用再到天体物理学。全面理解这一过程对于提高核反应堆的效率、增强癌症治疗和揭示宇宙中元素形成的奥秘至关重要。随着研究的不断进展，从研究寄生中子捕获中获得的知识无疑将为未来的重要技术和科学进步作出贡献。