primary fission product

简明释义

原始裂变产物

英英释义

例句

1.The most significant primary fission product 主要裂变产物 in a nuclear reactor is cesium-137.

在核反应堆中，最重要的主要裂变产物是铯-137。

2.In radiation safety, knowing the levels of primary fission products 主要裂变产物 helps in risk assessment.

在辐射安全中，了解主要裂变产物的水平有助于风险评估。

3.Scientists study the decay of primary fission products 主要裂变产物 to assess their long-term environmental impact.

科学家研究主要裂变产物的衰变，以评估其长期环境影响。

4.Understanding the behavior of primary fission products 主要裂变产物 is crucial for managing nuclear waste.

理解主要裂变产物的行为对于管理核废料至关重要。

5.The release of primary fission products 主要裂变产物 during an accident can lead to serious health risks.

事故期间释放的主要裂变产物可能导致严重的健康风险。

作文

Nuclear fission is a fundamental process that plays a crucial role in both nuclear power generation and nuclear weapons. When a heavy nucleus, such as uranium-235 or plutonium-239, absorbs a neutron, it becomes unstable and splits into two smaller nuclei, releasing a significant amount of energy in the process. The smaller nuclei produced from this reaction are known as primary fission products（主要裂变产物）. Understanding these primary fission products is essential for managing nuclear reactions, handling radioactive waste, and ensuring safety in nuclear facilities.The primary fission products consist mainly of isotopes of elements such as cesium, strontium, iodine, and xenon. These isotopes have varying half-lives and radiotoxicities, which means they can pose different levels of risk to human health and the environment. For instance, cesium-137 has a half-life of about 30 years, making it a long-term concern in terms of radioactive waste management. On the other hand, iodine-131 has a much shorter half-life of about 8 days, but it is highly radioactive and can accumulate in the thyroid gland, leading to serious health issues if ingested.The study of primary fission products is not only important for understanding the immediate effects of nuclear fission but also for evaluating the long-term consequences of nuclear energy use. When a nuclear reactor operates, these fission products are generated continuously, and their accumulation can affect reactor performance and safety. Therefore, engineers and scientists must carefully monitor and manage the levels of primary fission products within a reactor to prevent any potential accidents or malfunctions.Moreover, the presence of primary fission products in spent nuclear fuel poses significant challenges for waste disposal. After the fuel has been used in a reactor, it is highly radioactive and must be stored safely for thousands of years until its radioactivity decreases to manageable levels. This requires advanced containment methods and long-term planning to ensure that these materials do not harm the environment or public health.In addition to their implications for nuclear power, primary fission products also have applications in medicine and industry. For example, certain isotopes produced during fission can be harnessed for medical imaging and cancer treatment. Radioisotopes like iodine-131 are used in targeted therapies for thyroid cancer, demonstrating how the by-products of nuclear fission can be repurposed for beneficial uses.In conclusion, primary fission products are a vital aspect of nuclear fission that warrants thorough understanding and careful management. They play a significant role in the operation of nuclear reactors, the challenges of radioactive waste disposal, and even in medical applications. As we continue to explore the potential of nuclear energy, it is imperative to consider the implications of primary fission products to ensure that we harness this powerful process safely and responsibly.

核裂变是一个基本过程，在核能发电和核武器中都起着至关重要的作用。当重核，如铀-235或钚-239，吸收一个中子时，它会变得不稳定并分裂成两个较小的核，同时释放出大量能量。这种反应产生的小核被称为主要裂变产物。理解这些主要裂变产物对于管理核反应、处理放射性废物以及确保核设施的安全至关重要。主要裂变产物主要由铯、锶、碘和氙等元素的同位素组成。这些同位素具有不同的半衰期和放射毒性，这意味着它们对人类健康和环境的风险水平各不相同。例如，铯-137的半衰期约为30年，因此在放射性废物管理中是一个长期关注的问题。另一方面，碘-131的半衰期仅约为8天，但它是高度放射性的，并且可以在甲状腺中积累，导致摄入后出现严重的健康问题。对主要裂变产物的研究不仅对于理解核裂变的直接影响很重要，而且对于评估核能使用的长期后果也至关重要。当核反应堆运行时，这些裂变产物会不断生成，它们的积累可能会影响反应堆的性能和安全。因此，工程师和科学家必须仔细监测和管理反应堆内的主要裂变产物水平，以防止潜在的事故或故障。此外，主要裂变产物在乏燃料中的存在给废物处置带来了重大挑战。在燃料在反应堆中使用后，它是高度放射性的，必须安全储存数千年，直到其放射性降低到可管理的水平。这需要先进的封闭方法和长期规划，以确保这些材料不会对环境或公共健康造成危害。除了对核能的影响外，主要裂变产物在医学和工业中也有应用。例如，在裂变过程中产生的某些同位素可以用于医学成像和癌症治疗。像碘-131这样的放射性同位素被用于甲状腺癌的靶向治疗，展示了核裂变的副产品如何被重新利用于有益的用途。总之，主要裂变产物是核裂变的重要方面，值得深入理解和仔细管理。它们在核反应堆的运行、放射性废物处置的挑战甚至医学应用中发挥着重要作用。随着我们继续探索核能的潜力，考虑主要裂变产物的影响是至关重要的，以确保我们安全和负责任地利用这一强大的过程。