controlled nuclear reaction

简明释义

可控制核反应

英英释义

例句

1.Scientists are researching ways to improve the safety of controlled nuclear reactions in reactors.

科学家们正在研究提高反应堆中受控核反应安全性的方法。

2.During the training, engineers learned how to monitor a controlled nuclear reaction effectively.

在培训期间，工程师们学习了如何有效监控受控核反应。

3.The power plant operates using a controlled nuclear reaction, which is essential for generating electricity efficiently.

这座发电厂使用受控核反应，这对于高效发电至关重要。

4.A controlled nuclear reaction allows for the release of energy without the risks associated with an uncontrolled reaction.

受控核反应允许释放能量，而不伴随失控反应所带来的风险。

5.The principles of controlled nuclear reaction are applied in both power generation and medical applications.

受控核反应的原理在发电和医疗应用中都有所应用。

作文

The concept of a controlled nuclear reaction is fundamental to modern energy production, particularly in the field of nuclear power. A controlled nuclear reaction refers to the process where nuclear reactions, specifically fission, are regulated to produce energy in a safe and manageable way. This differs from an uncontrolled reaction, which can lead to catastrophic results, as seen in historical nuclear disasters. In a controlled environment, the reaction can be sustained at a steady rate, allowing for the generation of electricity while minimizing risks associated with radiation and overheating.Nuclear fission occurs when the nucleus of a heavy atom, such as uranium-235 or plutonium-239, absorbs a neutron and becomes unstable. This instability causes the nucleus to split into smaller nuclei, releasing a significant amount of energy in the form of heat. In a controlled nuclear reaction, this process is carefully monitored and controlled using various mechanisms, including control rods made of materials that absorb neutrons. By adjusting the position of these control rods within the reactor core, operators can regulate the number of free neutrons available to sustain the reaction, thereby controlling the rate of fission and the amount of heat produced.The heat generated from a controlled nuclear reaction is used to produce steam, which drives turbines connected to generators, ultimately producing electricity. This process is highly efficient, as a small amount of nuclear fuel can produce a large amount of energy compared to fossil fuels. Moreover, nuclear power plants emit very low levels of greenhouse gases during operation, making them an attractive option in the fight against climate change.However, the management of a controlled nuclear reaction requires sophisticated technology and strict safety protocols. Operators must continuously monitor the reactor's temperature, pressure, and radiation levels to ensure that everything remains within safe limits. Additionally, the design of the reactor itself includes multiple safety systems to prevent accidents. For example, many reactors have containment structures designed to contain any potential leaks of radioactive materials, and emergency cooling systems that activate if the reactor overheats.Despite the advantages, the use of controlled nuclear reactions also raises concerns about the long-term management of nuclear waste, which remains hazardous for thousands of years. The disposal of spent nuclear fuel is a significant challenge, and various methods are being researched and implemented, including deep geological storage and recycling of nuclear materials.In conclusion, a controlled nuclear reaction is a vital process that enables the safe and efficient generation of nuclear energy. While it offers numerous benefits, including low greenhouse gas emissions and high energy output, it also presents challenges that require careful consideration and management. As the world continues to seek sustainable energy solutions, the role of controlled nuclear reactions will likely remain a critical component of the global energy landscape, provided that we can address the associated risks and challenges effectively.

受控核反应的概念是现代能源生产的基础，尤其是在核能领域。受控核反应指的是核反应，特别是裂变反应，在安全和可管理的方式下进行调节以产生能量。这与失控反应不同，后者可能导致灾难性后果，如历史上的核灾难。在受控环境中，反应可以保持在稳定的速率，从而在最小化与辐射和过热相关的风险的同时，发电。核裂变发生在重原子核（如铀-235或钚-239）吸收一个中子并变得不稳定时。这种不稳定性导致原子核分裂成较小的核，并释放出大量以热的形式存在的能量。在受控核反应中，这一过程通过各种机制进行仔细监控和控制，包括由吸收中子的材料制成的控制棒。通过调整这些控制棒在反应堆核心中的位置，操作员可以调节可用于维持反应的自由中子数量，从而控制裂变的速率和产生的热量。从受控核反应中产生的热量用于产生蒸汽，驱动连接到发电机的涡轮机，最终产生电力。这个过程非常高效，因为少量的核燃料可以产生比化石燃料更多的能量。此外，核电厂在运行过程中排放的温室气体水平非常低，使其成为应对气候变化的有吸引力的选择。然而，管理受控核反应需要先进的技术和严格的安全协议。操作员必须持续监测反应堆的温度、压力和辐射水平，以确保一切保持在安全限度内。此外，反应堆本身的设计包括多重安全系统，以防止事故。例如，许多反应堆具有设计用来包含任何潜在的放射性物质泄漏的围护结构，以及在反应堆过热时激活的紧急冷却系统。尽管有优势，受控核反应的使用也引发了对核废料长期管理的担忧，核废料在数千年内仍然是危险的。处理用过的核燃料是一个重大挑战，各种方法正在研究和实施，包括深地质储存和核材料回收。总之，受控核反应是使核能安全高效发电的重要过程。虽然它提供了许多好处，包括低温室气体排放和高能量输出，但它也带来了需要仔细考虑和管理的挑战。随着世界继续寻找可持续能源解决方案，受控核反应的作用可能仍将是全球能源格局中的关键组成部分，前提是我们能够有效解决相关的风险和挑战。