nuclear fission

简明释义

核裂变

英英释义

例句

1.The bombs dropped on Hiroshima and Nagasaki were based on nuclear fission 核裂变 technology.

投放在广岛和长崎的炸弹是基于核裂变技术的。

2.Scientists are studying how to control nuclear fission 核裂变 for safer energy production.

科学家们正在研究如何控制核裂变以更安全地生产能源。

3.The process of nuclear fission 核裂变 releases a tremendous amount of energy.

核裂变的过程释放出巨大的能量。

4.In a nuclear reactor, nuclear fission 核裂变 is used to generate electricity.

在核反应堆中，核裂变用于发电。

5.The discovery of nuclear fission 核裂变 was a pivotal moment in physics.

核裂变的发现是物理学中的一个重要时刻。

作文

Nuclear fission is a process that has significantly shaped the landscape of modern energy production and scientific research. At its core, nuclear fission refers to the splitting of an atomic nucleus into two or more smaller nuclei, along with the release of a substantial amount of energy. This phenomenon occurs when a heavy nucleus, such as that of uranium-235 or plutonium-239, absorbs a neutron and becomes unstable, leading to its division. The energy released during this process can be harnessed for various applications, particularly in nuclear power plants, where it serves as a primary source of electricity generation.The discovery of nuclear fission in the early 20th century marked a pivotal moment in physics and engineering. Scientists like Lise Meitner and Otto Hahn played crucial roles in uncovering the mechanisms behind this reaction. Their findings not only advanced our understanding of atomic structure but also opened up new avenues for energy production. The first controlled nuclear chain reaction was achieved in 1942, a milestone that paved the way for the development of nuclear reactors.One of the most significant advantages of nuclear fission is its ability to produce vast amounts of energy from relatively small amounts of fuel. For instance, a single kilogram of uranium can yield as much energy as several tons of coal. This efficiency makes nuclear power an attractive alternative to fossil fuels, especially in the context of global efforts to combat climate change. By reducing greenhouse gas emissions, nuclear energy can play a critical role in transitioning to a more sustainable energy future.However, the use of nuclear fission is not without its challenges. The potential for catastrophic accidents, as witnessed in Chernobyl and Fukushima, raises concerns about the safety of nuclear power plants. Additionally, the management of radioactive waste remains a significant issue, as spent nuclear fuel can remain hazardous for thousands of years. These factors contribute to public apprehension regarding nuclear energy, often leading to opposition against its use.Moreover, the proliferation of nuclear technology poses geopolitical risks. The same principles that enable nuclear fission to generate electricity can also be applied to create nuclear weapons. This dual-use nature of nuclear technology necessitates stringent international regulations and oversight to prevent the spread of nuclear weapons capabilities.In recent years, advancements in technology have led to the development of safer and more efficient nuclear reactors, such as small modular reactors (SMRs) and thorium reactors. These innovations aim to address some of the safety and waste management concerns associated with traditional nuclear power plants. Furthermore, research into fusion energy, which promises even greater energy yields without the same level of radioactive waste, continues to progress, offering hope for the future.In conclusion, nuclear fission is a powerful process that has transformed energy production and scientific inquiry. While it offers significant benefits in terms of energy efficiency and reduced carbon emissions, the associated risks and challenges cannot be overlooked. As we move forward, it is essential to balance the advantages of nuclear fission with the need for safety, sustainability, and responsible governance. Only then can we fully harness the potential of this remarkable scientific discovery while ensuring a safe and secure energy future for generations to come.

核裂变是一个显著影响现代能源生产和科学研究的过程。它的核心在于，核裂变指的是将原子核分裂成两个或更多较小的核，同时释放出大量能量。当一个重核，如铀-235或钚-239，吸收一个中子并变得不稳定时，就会发生这种现象，导致其分裂。在这个过程中释放出的能量可以用于各种应用，特别是在核电站中，它作为发电的主要来源。核裂变在20世纪初的发现标志着物理学和工程学的一个重要时刻。丽莎·梅特纳和奥托·哈恩等科学家在揭示这一反应机制方面发挥了关键作用。他们的发现不仅推动了我们对原子结构的理解，还开辟了新的能源生产途径。1942年实现的第一次可控核链式反应是一个里程碑，为核反应堆的发展铺平了道路。核裂变最显著的优势之一是能够从相对少量的燃料中产生巨大的能量。例如，一公斤铀所能产生的能量相当于数吨煤。这种效率使得核能成为化石燃料的有吸引力的替代品，特别是在全球努力应对气候变化的背景下。通过减少温室气体排放，核能可以在向更可持续的能源未来过渡中发挥关键作用。然而，使用核裂变并非没有挑战。如切尔诺贝利和福岛所见，潜在的灾难性事故引发了人们对核电站安全性的担忧。此外，放射性废物的管理仍然是一个重大问题，因为使用过的核燃料可能在数千年内仍然具有危险性。这些因素导致公众对核能的担忧，往往导致反对其使用。此外，核技术的扩散也带来了地缘政治风险。能够产生电力的核裂变原理同样可以被用于制造核武器。这种核技术的双重用途性质需要严格的国际法规和监督，以防止核武器能力的扩散。近年来，技术进步促使小型模块化反应堆（SMR）和钍反应堆等更安全、更高效的核反应堆的发展。这些创新旨在解决传统核电站相关的一些安全和废物管理问题。此外，对聚变能源的研究继续进展，这种能源承诺可以在没有同样程度的放射性废物的情况下提供更大的能量产出，为未来带来希望。总之，核裂变是一个强大的过程，它改变了能源生产和科学探究。虽然它在能源效率和减少碳排放方面提供了显著的好处，但相关的风险和挑战也不能被忽视。随着我们向前发展，平衡核裂变的优势与安全、可持续性和负责任治理的需求至关重要。只有这样，我们才能充分利用这一非凡的科学发现的潜力，同时确保为后代提供安全和可靠的能源未来。