radioactive equilibrium

简明释义

放射平衡

英英释义

例句

1.When dealing with multiple decay chains, it is important to recognize the conditions under which radioactive equilibrium (放射性平衡) can be established.

在处理多个衰变链时，重要的是要认识到可以建立radioactive equilibrium（放射性平衡）的条件。

2.In nuclear medicine, achieving radioactive equilibrium (放射性平衡) between administered radioisotopes and their decay products is essential for effective imaging.

在核医学中，实现施用的放射性同位素与其衰变产物之间的radioactive equilibrium（放射性平衡）对有效成像至关重要。

3.The concept of radioactive equilibrium (放射性平衡) is often applied in environmental studies to assess the stability of radioactive contaminants.

在环境研究中，radioactive equilibrium（放射性平衡）的概念常被用来评估放射性污染物的稳定性。

4.Understanding radioactive equilibrium (放射性平衡) is crucial for accurately measuring the age of geological samples using radiometric dating.

理解radioactive equilibrium（放射性平衡）对于使用放射性测年法准确测量地质样本的年龄至关重要。

5.In a closed system, the concentration of a radioactive isotope can reach a state of radioactive equilibrium (放射性平衡) where the rate of decay equals the rate of production.

在一个封闭系统中，放射性同位素的浓度可以达到一种radioactive equilibrium（放射性平衡）状态，在这个状态下，衰变速率等于产生速率。

作文

In the fascinating world of nuclear physics, one crucial concept that emerges is radioactive equilibrium. This phenomenon occurs when the rate of production of a radioactive isotope equals the rate of its decay. To understand this better, we need to delve into the fundamentals of radioactivity and how isotopes interact over time.Radioactive isotopes are unstable atoms that release energy in the form of radiation as they transition into more stable forms. This process of decay can be measured in terms of half-life, which is the time required for half of the radioactive nuclei in a sample to decay. As these isotopes decay, they often produce other radioactive elements, leading to a chain reaction of transformations.When we talk about radioactive equilibrium (放射性平衡), we refer specifically to two types: secular equilibrium and transient equilibrium. Secular equilibrium occurs when the parent isotope has a much longer half-life than the daughter isotope. In this case, the daughter isotope builds up slowly until it reaches a point where its decay rate matches the production rate from the parent isotope. For example, consider uranium-238, which decays into radium-226. Over time, the amount of radium-226 will stabilize, creating a state of equilibrium with uranium-238.On the other hand, transient equilibrium happens when the half-life of the parent isotope is shorter than that of the daughter isotope. In such cases, the daughter isotope will reach a maximum concentration relatively quickly and then gradually decline as it decays. An example of this is seen in the decay of polonium-210, which is produced by the decay of lead-210. Initially, polonium-210 accumulates rapidly, but as it decays, its concentration will eventually stabilize in relation to lead-210, achieving a state of transient equilibrium.Understanding radioactive equilibrium (放射性平衡) is essential in various fields, including medicine, archaeology, and environmental science. In medical applications, for instance, radioactive isotopes are often used in diagnostic imaging and cancer treatment. Knowing how these isotopes behave and reach equilibrium helps doctors determine appropriate dosages and timing for treatments.In archaeology, the principle of radioactive equilibrium (放射性平衡) is used in radiocarbon dating. By measuring the ratio of carbon-14 to carbon-12 in organic materials, scientists can estimate the age of artifacts and fossils. The understanding of equilibrium allows them to make accurate calculations regarding the age of these items based on the known half-lives of the isotopes involved.Environmental science also relies on the concept of radioactive equilibrium (放射性平衡) when assessing the impact of radioactive contaminants. By understanding how these isotopes decay and reach equilibrium in the environment, scientists can better predict their behavior and potential risks to human health and ecosystems.In conclusion, radioactive equilibrium (放射性平衡) is a fundamental concept in nuclear physics that plays a significant role across various scientific disciplines. Its understanding is vital for advancements in medicine, archaeology, and environmental safety. As we continue to explore the intricacies of isotopes and their interactions, the principles of radioactive equilibrium (放射性平衡) will undoubtedly remain a key area of study, influencing both theoretical research and practical applications.