thermal neutron source

简明释义

热中子源

英英释义

例句

1.The research facility uses a thermal neutron source to conduct experiments on material properties.

该研究设施使用热中子源进行材料性质的实验。

2.The safety protocols around the thermal neutron source are stringent to protect personnel from radiation.

围绕热中子源的安全协议非常严格，以保护人员免受辐射。

3.Scientists often utilize a thermal neutron source for neutron radiography to inspect industrial components.

科学家们常常利用热中子源进行中子成像，以检查工业组件。

4.A thermal neutron source can help in studying the structure of complex materials at the atomic level.

热中子源有助于研究复杂材料的原子级结构。

5.In nuclear reactors, a thermal neutron source is essential for sustaining the fission process.

在核反应堆中，热中子源对维持裂变过程至关重要。

作文

The world of nuclear physics and engineering is filled with complex concepts and terminologies that are essential for understanding various applications in science and technology. One such term that plays a significant role in this field is the thermal neutron source. A thermal neutron source refers to a device or material that emits neutrons at thermal energies, typically around 0.025 eV. These neutrons are crucial in many scientific and industrial applications, particularly in nuclear reactors and neutron scattering experiments.To understand the significance of a thermal neutron source, one must first grasp the concept of neutrons themselves. Neutrons are subatomic particles found in the nucleus of an atom, and they carry no electric charge. When neutrons are emitted from a thermal neutron source, they can interact with other atoms and materials, which can lead to various reactions and transformations. This property makes them invaluable in fields such as nuclear medicine, where they are used for cancer treatment, and in materials science, where they help researchers study the structure of materials at the atomic level.In nuclear reactors, a thermal neutron source is critical for sustaining the fission process. The fission of heavy nuclei, such as uranium-235 or plutonium-239, releases a significant amount of energy, but it also produces fast neutrons. These fast neutrons must be moderated to thermal energies to efficiently induce further fission reactions in other fissile materials. A thermal neutron source can provide the necessary thermal neutrons to maintain the chain reaction, ensuring the reactor operates smoothly and safely.Moreover, thermal neutron sources are extensively used in neutron scattering experiments, which are vital for studying the properties of materials. In these experiments, thermal neutrons are directed at a sample, and their scattering patterns provide information about the arrangement of atoms within the material. This technique is widely used in various fields, including chemistry, biology, and condensed matter physics, to investigate the structure and dynamics of complex systems.One of the most common types of thermal neutron sources is the nuclear reactor itself. However, there are also other methods to produce thermal neutrons, such as using isotopes like californium-252, which undergoes spontaneous fission and emits thermal neutrons. These portable thermal neutron sources are often used in non-destructive testing and radiography, allowing for the inspection of materials without causing damage.In conclusion, the thermal neutron source is a fundamental component in nuclear physics and engineering, with far-reaching implications in various scientific and industrial domains. By providing thermal neutrons, these sources enable critical processes in nuclear reactors, facilitate advanced research in materials science, and contribute to medical applications. As technology continues to advance, the importance of thermal neutron sources will only grow, highlighting the need for ongoing research and development in this fascinating field. Understanding the role and functionality of a thermal neutron source is essential for anyone interested in the future of nuclear science and its applications in our daily lives.

核物理和工程的世界充满了复杂的概念和术语，这些都是理解科学和技术中各种应用所必需的。其中一个在这方面扮演重要角色的术语是热中子源。热中子源指的是一种设备或材料，它以热能（通常约0.025电子伏特）发射中子。这些中子在许多科学和工业应用中至关重要，特别是在核反应堆和中子散射实验中。要理解热中子源的重要性，首先必须掌握中子的概念。中子是存在于原子核中的亚原子粒子，它们不带电。当中子从热中子源中发射出来时，它们可以与其他原子和材料相互作用，从而导致各种反应和转变。这一特性使它们在核医学等领域不可或缺，在核医学中，中子被用于癌症治疗；在材料科学中，研究人员利用中子研究材料的原子结构。在核反应堆中，热中子源对于维持裂变过程至关重要。重核（如铀-235或钚-239）的裂变释放出大量能量，但同时也产生快速中子。这些快速中子必须被减速到热能，以有效地诱导其他可裂变材料中的进一步裂变反应。热中子源可以提供必要的热中子，以维持链式反应，确保反应堆平稳和安全地运行。此外，热中子源广泛用于中子散射实验，这对研究材料的性质至关重要。在这些实验中，热中子被指向样品，其散射模式提供了关于材料内部原子排列的信息。这种技术在化学、生物学和凝聚态物理等多个领域被广泛使用，用于研究复杂系统的结构和动态。最常见的热中子源之一就是核反应堆。然而，还有其他方法可以产生热中子，例如使用像锕系元素-252这样的同位素，它通过自发裂变发射热中子。这些便携式的热中子源通常用于无损检测和放射摄影，能够在不造成损坏的情况下检查材料。总之，热中子源是核物理和工程中的基本组成部分，在科学和工业领域具有深远的影响。通过提供热中子，这些源能够促进核反应堆中的关键过程，促进材料科学中的先进研究，并为医疗应用做出贡献。随着技术的不断进步，热中子源的重要性只会增加，突显了在这一迷人领域持续研究和发展的必要性。理解热中子源的作用和功能对于任何对核科学未来及其在日常生活中的应用感兴趣的人来说都是必不可少的。