atomic nucleus

简明释义

原子核;

英英释义

例句

1.Radioactive decay occurs when an atomic nucleus is unstable and emits particles.

当原子核不稳定并释放粒子时，会发生放射性衰变。

2.During nuclear fusion, two atomic nuclei combine to form a heavier nucleus.

在核聚变过程中，两个原子核结合形成一个更重的核。

3.The stability of an atom is largely determined by the structure of its atomic nucleus.

一个原子的稳定性主要由其原子核的结构决定。

4.The mass of an atom is primarily concentrated in its atomic nucleus.

一个原子的质量主要集中在其原子核中。

5.Scientists study the atomic nucleus to understand the forces that hold it together.

科学家研究原子核以理解将其结合在一起的力量。

作文

The study of the atomic nucleus, or 原子核, is fundamental to our understanding of the universe. At its core, the atomic nucleus is composed of protons and neutrons, collectively known as nucleons. This tiny yet powerful structure is located at the center of an atom and contains nearly all of its mass. The protons are positively charged, while the neutrons have no charge, which creates a delicate balance within the atomic nucleus. Understanding this balance is crucial because it determines the stability of the nucleus and, consequently, the element itself.One of the most fascinating aspects of the atomic nucleus is the strong nuclear force that binds these nucleons together. This force is incredibly powerful, but it acts over a very short range, which means that only nucleons that are very close to each other can experience this force. When the number of protons in a nucleus exceeds a certain limit, the repulsive electromagnetic force between them can overcome the strong nuclear force, leading to instability. This instability can result in radioactive decay, where the nucleus emits particles and energy in an attempt to reach a more stable state.Radioactive isotopes, which are variants of elements with unstable atomic nuclei, have significant applications in medicine, energy production, and scientific research. For instance, isotopes like Carbon-14 are used in radiocarbon dating to determine the age of ancient artifacts. In medicine, radioactive isotopes are utilized for diagnostic imaging and cancer treatment. These practical applications highlight the importance of understanding the atomic nucleus and its properties.Moreover, the study of the atomic nucleus has led to advancements in nuclear physics, which explores the interactions and behaviors of nucleons. Techniques such as particle accelerators allow scientists to collide particles at high speeds, providing insights into the fundamental forces that govern the universe. Through these experiments, researchers can observe phenomena like nuclear fusion and fission, processes that power the sun and nuclear reactors, respectively.In addition to practical applications, the atomic nucleus serves as a gateway to understanding the fundamental principles of matter and energy. Theories such as quantum mechanics and the standard model of particle physics rely heavily on the behavior of the atomic nucleus and its components. By studying the atomic nucleus, scientists can explore concepts such as energy levels, quantum states, and the dual nature of particles.In conclusion, the atomic nucleus is not just a central feature of an atom; it is a crucial element in the broader context of scientific inquiry. From its role in the stability of matter to its applications in technology and medicine, understanding the atomic nucleus opens doors to various fields of study. As we continue to explore the mysteries of the atomic nucleus, we uncover deeper insights into the nature of reality itself, making it a subject of endless fascination and importance.

对原子核的研究是我们理解宇宙的基础。在其核心，原子核由质子和中子组成，这些统称为核子。这个微小而强大的结构位于原子的中心，几乎包含了原子所有的质量。质子带有正电荷，而中子没有电荷，这在原子核内形成了一种微妙的平衡。理解这种平衡至关重要，因为它决定了核的稳定性，从而影响元素本身。原子核最迷人的方面之一是将这些核子结合在一起的强核力。这种力量非常强大，但作用范围非常短，这意味着只有非常接近的核子才能体验到这种力量。当一个核中的质子数量超过某个极限时，它们之间的排斥电磁力可能会克服强核力，导致不稳定。这种不稳定可能导致放射性衰变，核释放粒子和能量以试图达到更稳定的状态。放射性同位素是具有不稳定原子核的元素变体，在医学、能源生产和科学研究中具有重要应用。例如，碳-14同位素用于放射性碳定年，以确定古代文物的年龄。在医学中，放射性同位素用于诊断成像和癌症治疗。这些实际应用突显了理解原子核及其特性的必要性。此外，对原子核的研究推动了核物理学的发展，该领域探索核子的相互作用和行为。粒子加速器等技术使科学家能够高速碰撞粒子，从而提供对支配宇宙的基本力量的深入了解。通过这些实验，研究人员可以观察到核聚变和裂变等现象，这些过程分别为太阳和核反应堆提供动力。除了实际应用，原子核还是理解物质和能量基本原理的门户。量子力学和粒子物理标准模型等理论在很大程度上依赖于原子核及其组成部分的行为。通过研究原子核，科学家可以探索能级、量子态以及粒子的双重性质等概念。总之，原子核不仅是原子的中心特征；它在更广泛的科学探究背景中是一个关键元素。从它在物质稳定性中的作用到在技术和医学中的应用，理解原子核为各种研究领域打开了大门。随着我们继续探索原子核的奥秘，我们揭示了对现实本质的更深刻见解，使其成为一个无尽迷人的重要主题。