alpha radiation

简明释义

α辐射;

英英释义

例句

1.The safety protocols in the laboratory ensure that no one is exposed to alpha radiation (阿尔法辐射) during experiments.

实验室的安全协议确保在实验过程中没有人接触到阿尔法辐射。

2.In some smoke detectors, alpha radiation (阿尔法辐射) is used to ionize the air and detect smoke particles.

在某些烟雾探测器中，使用阿尔法辐射来使空气电离并检测烟雾颗粒。

3.Workers in nuclear power plants must wear protective gear to shield against alpha radiation (阿尔法辐射).

核电站的工人必须穿戴防护装备，以防护阿尔法辐射。

4.The medical treatment involved the use of alpha radiation (阿尔法辐射) to target cancer cells.

这种医疗治疗涉及使用阿尔法辐射来针对癌细胞。

5.Geiger counters are used to detect alpha radiation (阿尔法辐射) emitted from radioactive materials.

盖革计数器用于检测从放射性材料中发出的阿尔法辐射。

作文

Alpha radiation, or 阿尔法辐射, is one of the three main types of radioactive decay that occur in unstable atomic nuclei. This form of radiation consists of alpha particles, which are essentially helium nuclei made up of two protons and two neutrons. When an unstable nucleus undergoes alpha decay, it ejects these alpha particles, resulting in a change in the original atom's identity and mass. Understanding 阿尔法辐射 is crucial in various fields, including nuclear physics, medicine, and environmental science.The discovery of 阿尔法辐射 dates back to the early 20th century when scientists like Ernest Rutherford began to explore the nature of radioactivity. Rutherford’s experiments demonstrated that alpha particles could be deflected by electric fields and were positively charged. This groundbreaking work laid the foundation for our understanding of atomic structure and radioactivity. In practical applications, 阿尔法辐射 has both beneficial and harmful effects. In medicine, it is used in targeted alpha-particle therapy, a treatment for certain types of cancer. By delivering high doses of radiation directly to cancer cells, this method minimizes damage to surrounding healthy tissues. The precision of 阿尔法辐射 makes it a promising option for treating tumors that are difficult to reach with conventional therapies.However, exposure to 阿尔法辐射 can also pose significant health risks. Alpha particles have low penetration ability and cannot penetrate the outer layer of human skin; however, if alpha-emitting materials are ingested or inhaled, they can cause serious internal damage. This highlights the importance of safety measures in environments where radioactive materials are handled. Regulatory agencies set stringent guidelines to limit exposure to 阿尔法辐射 in workplaces and public areas to protect human health and the environment.Moreover, 阿尔法辐射 plays a significant role in the natural environment. Certain elements, such as uranium and radium, naturally emit alpha particles as they decay. This process contributes to background radiation levels, which are essential to monitor for environmental health. Scientists study 阿尔法辐射 in the context of geology and ecology to understand how radiation affects ecosystems and the potential risks associated with natural radioactive materials.In conclusion, 阿尔法辐射 is a fundamental concept in the study of radioactivity with wide-ranging implications in science and medicine. While it offers therapeutic benefits, particularly in cancer treatment, it also poses risks that require careful management. As research continues to evolve, our understanding of 阿尔法辐射 will undoubtedly expand, leading to better safety protocols and innovative applications in various fields. The dual nature of 阿尔法辐射 serves as a reminder of the power of natural phenomena and the responsibility we have to harness them safely and effectively.

阿尔法辐射是发生在不稳定原子核中的三种主要放射性衰变类型之一。这种辐射形式由阿尔法粒子组成，阿尔法粒子本质上是由两个质子和两个中子构成的氦核。当不稳定的原子核经历阿尔法衰变时，它会喷射出这些阿尔法粒子，从而导致原始原子的身份和质量发生变化。理解阿尔法辐射对于核物理、医学和环境科学等多个领域至关重要。阿尔法辐射的发现可以追溯到20世纪初，当时科学家如恩斯特·卢瑟福开始探索放射性的本质。卢瑟福的实验表明，阿尔法粒子可以被电场偏转，并且带有正电荷。这一开创性的工作为我们理解原子结构和放射性奠定了基础。在实际应用中，阿尔法辐射既有益处也有害处。在医学上，它被用于靶向阿尔法粒子疗法，这是一种治疗某些类型癌症的方法。通过将高剂量的辐射直接输送到癌细胞，这种方法最小化了对周围健康组织的损害。阿尔法辐射的精确性使其成为治疗难以用常规疗法到达的肿瘤的有希望的选择。然而，接触阿尔法辐射也可能带来重大健康风险。阿尔法粒子的穿透能力较低，无法穿透人体皮肤的外层；然而，如果摄入或吸入阿尔法发射材料，它们可能会造成严重的内部损伤。这突显了在处理放射性材料的环境中采取安全措施的重要性。监管机构设定严格的指导方针，以限制工作场所和公共区域对阿尔法辐射的暴露，以保护人类健康和环境。此外，阿尔法辐射在自然环境中也发挥着重要作用。某些元素，如铀和镭，随着衰变自然发射阿尔法粒子。这个过程有助于背景辐射水平的形成，监测这些水平对于环境健康至关重要。科学家研究阿尔法辐射在地质和生态学中的背景，以了解辐射如何影响生态系统以及与自然放射性材料相关的潜在风险。总之，阿尔法辐射是放射性研究中的一个基本概念，具有广泛的科学和医学意义。尽管它提供了治疗益处，尤其是在癌症治疗中，但它也带来了需要谨慎管理的风险。随着研究的不断发展，我们对阿尔法辐射的理解无疑会扩展，从而导致更好的安全协议和各种领域的创新应用。阿尔法辐射的双重性质提醒我们自然现象的力量，以及我们有责任安全有效地利用它们。