thermal neutron fission cross section

简明释义

热中子裂变截面

英英释义

例句

1.In nuclear physics, understanding the thermal neutron fission cross section (热中子裂变截面) helps in designing better reactors.

在核物理学中，了解热中子裂变截面（热中子裂变截面）有助于设计更好的反应堆。

2.Researchers are studying the thermal neutron fission cross section (热中子裂变截面) of various isotopes to improve nuclear safety.

研究人员正在研究各种同位素的热中子裂变截面（热中子裂变截面）以提高核安全性。

3.The reactor's efficiency is largely determined by the value of the thermal neutron fission cross section (热中子裂变截面) for fuel materials.

反应堆的效率在很大程度上取决于燃料材料的热中子裂变截面（热中子裂变截面）的数值。

4.The thermal neutron fission cross section (热中子裂变截面) of uranium-235 is significantly higher than that of uranium-238.

铀-235的热中子裂变截面（热中子裂变截面）明显高于铀-238。

5.The experiment measured the thermal neutron fission cross section (热中子裂变截面) of plutonium-239 at different temperatures.

实验测量了不同温度下钚-239的热中子裂变截面（热中子裂变截面）。

作文

The study of nuclear reactions is a fascinating field that combines physics, engineering, and chemistry. Among the various types of nuclear reactions, fission plays a crucial role in both energy production and nuclear weapons. One important concept in understanding fission is the thermal neutron fission cross section, which refers to the probability of a fission reaction occurring when a thermal neutron interacts with a fissile nucleus. This concept is vital for nuclear reactor design and safety. In this essay, I will explore the significance of the thermal neutron fission cross section in nuclear science, its applications, and its implications for future energy solutions.Fission occurs when a heavy nucleus, such as uranium-235 or plutonium-239, absorbs a neutron and becomes unstable. This instability leads to the nucleus splitting into two smaller nuclei, along with the release of energy and additional neutrons. The thermal neutron fission cross section is particularly important because thermal neutrons, which are slow-moving neutrons, are more likely to cause fission in certain materials compared to fast neutrons. This is due to the fact that the energy levels of thermal neutrons match the binding energy of the nucleus more closely, increasing the likelihood of absorption.In practical terms, the thermal neutron fission cross section determines how effectively a nuclear reactor can utilize fuel. A higher cross section means that more fission reactions can occur per unit of time, leading to greater energy output. This is why materials with high thermal neutron fission cross sections, such as uranium-235, are preferred for use in reactors. Engineers and scientists must carefully calculate these values to optimize reactor performance and ensure a steady supply of energy.Moreover, the thermal neutron fission cross section has significant implications for the development of nuclear weapons. In weapons design, the efficiency of the fission process directly impacts the yield of the explosion. Understanding the cross sections allows scientists to predict how different materials will behave under neutron bombardment, which is crucial for creating effective nuclear devices.The importance of the thermal neutron fission cross section extends beyond current technologies; it also plays a role in the future of energy production. As the world seeks cleaner and more sustainable energy sources, nuclear power remains a viable option. Research into advanced reactor designs, such as fast reactors and thorium reactors, aims to enhance the utilization of nuclear fuel while minimizing waste. These innovations often rely on a deep understanding of neutron interactions, including the thermal neutron fission cross section, to improve efficiency and safety.In conclusion, the thermal neutron fission cross section is a fundamental concept in nuclear physics that has far-reaching implications for energy production, weapons design, and future technologies. By understanding this concept, scientists and engineers can develop better nuclear reactors, create safer energy solutions, and contribute to a sustainable energy future. As we continue to explore the potential of nuclear energy, the insights gained from studying the thermal neutron fission cross section will undoubtedly play a pivotal role in shaping our world.

核反应的研究是一个引人入胜的领域，结合了物理学、工程学和化学。在各种核反应中，裂变在能源生产和核武器中起着至关重要的作用。理解裂变的一个重要概念是热中子裂变截面，它指的是当热中子与裂变核相互作用时发生裂变反应的概率。这个概念对核反应堆的设计和安全至关重要。在这篇文章中，我将探讨热中子裂变截面在核科学中的意义、应用及其对未来能源解决方案的影响。裂变发生在重核，如铀-235或钚-239，吸收一个中子后变得不稳定。这种不稳定导致核裂变成两个较小的核，并释放能量和额外的中子。热中子裂变截面尤其重要，因为热中子（慢中子）比快中子更可能引起某些材料的裂变。这是因为热中子的能量水平与核的结合能更接近，从而增加了吸收的可能性。在实际应用中，热中子裂变截面决定了核反应堆如何有效利用燃料。较高的截面意味着每单位时间内可以发生更多的裂变反应，从而导致更大的能量输出。这就是为什么具有高热中子裂变截面的材料，如铀-235，被优先用于反应堆的原因。工程师和科学家必须仔细计算这些值，以优化反应堆性能并确保稳定的能源供应。此外，热中子裂变截面对核武器的发展具有重要影响。在武器设计中，裂变过程的效率直接影响爆炸的威力。理解截面使科学家能够预测不同材料在中子轰击下的行为，这对制造有效的核装置至关重要。热中子裂变截面的重要性不仅限于当前技术；它还在未来能源生产中发挥作用。随着世界寻求更清洁和可持续的能源来源，核能仍然是一个可行的选择。对先进反应堆设计的研究，例如快堆和钍堆，旨在提高核燃料的利用率，同时最小化废物。这些创新通常依赖于对中子相互作用，包括热中子裂变截面的深入理解，以提高效率和安全性。总之，热中子裂变截面是核物理中的一个基本概念，对能源生产、武器设计和未来技术有深远的影响。通过理解这一概念，科学家和工程师可以开发更好的核反应堆，创造更安全的能源解决方案，并为可持续能源的未来做出贡献。随着我们继续探索核能的潜力，研究热中子裂变截面所获得的见解无疑将在塑造我们的世界中发挥关键作用。