secular equilibrium

简明释义

长期放射性平衡

英英释义

例句

1.In nuclear physics, when a radioactive isotope reaches secular equilibrium 稳态平衡, the rate of decay of the parent isotope equals the rate of decay of the daughter isotope.

在核物理中，当一个放射性同位素达到secular equilibrium 稳态平衡时，母同位素的衰变速率等于子同位素的衰变速率。

2.In a closed system, achieving secular equilibrium 稳态平衡 means that the concentrations of reactants and products remain constant over time.

在一个封闭系统中，实现secular equilibrium 稳态平衡意味着反应物和产物的浓度随时间保持不变。

3.Geologists use the principle of secular equilibrium 稳态平衡 when dating rocks using radioactive isotopes.

地质学家在使用放射性同位素对岩石进行测年时，运用secular equilibrium 稳态平衡原理。

4.The concept of secular equilibrium 稳态平衡 is important in radiological protection to ensure safety in handling radioactive materials.

在放射防护中，secular equilibrium 稳态平衡的概念很重要，以确保处理放射性材料的安全。

5.When studying the decay chains, scientists often look for secular equilibrium 稳态平衡 to simplify calculations.

在研究衰变链时，科学家们通常寻找secular equilibrium 稳态平衡以简化计算。

作文

In the field of nuclear physics and radiochemistry, the term secular equilibrium refers to a state in which the activity of a parent radioactive isotope is equal to the activity of its daughter isotopes over a long period of time. This concept is crucial for understanding the behavior of radioactive materials and their decay processes. When a radioactive substance decays, it transforms into another element or isotope, known as the daughter product. Initially, the activity of the daughter product is zero, as it has just been formed. However, over time, as the parent isotope continues to decay, the daughter product accumulates, and its activity increases. Eventually, a point is reached where the rate of production of the daughter product equals the rate at which it decays. This balance results in a stable situation known as secular equilibrium (世俗平衡). The significance of secular equilibrium lies in various applications, including radiometric dating, nuclear medicine, and environmental monitoring. For instance, in radiometric dating, scientists utilize the principles of secular equilibrium to determine the age of geological samples. By measuring the ratio of parent to daughter isotopes, they can calculate the time that has elapsed since the material was last heated or otherwise altered. This method provides valuable insights into the history of our planet and the evolution of life.In nuclear medicine, secular equilibrium plays a vital role in the use of radioisotopes for diagnosis and treatment. Certain medical procedures involve the administration of radioactive tracers that emit radiation detectable by imaging devices. Understanding the kinetics of these isotopes, especially in terms of secular equilibrium, allows medical professionals to optimize the dosage and timing of treatments, ensuring maximum efficacy while minimizing patient exposure to radiation.Moreover, secular equilibrium is essential for monitoring environmental radioactivity. In areas affected by nuclear accidents or contamination, scientists assess the levels of radioactive materials to evaluate potential health risks. By understanding the dynamics of secular equilibrium, they can predict how long certain isotopes will remain hazardous and develop strategies for remediation.Despite its importance, secular equilibrium can be complex to grasp, especially for those new to the field of nuclear science. It requires a solid understanding of radioactive decay chains and the relationships between different isotopes. However, once the concept is mastered, it opens up a deeper comprehension of the natural processes that govern our environment and the technologies we use in medicine and industry.In conclusion, secular equilibrium is a fundamental concept in the study of radioactivity and its applications. It represents a state of balance between parent and daughter isotopes, allowing for various practical uses in fields such as geology, medicine, and environmental science. As we continue to explore the mysteries of the atomic world, understanding secular equilibrium will remain vital for researchers and practitioners alike, paving the way for advancements that benefit society as a whole.

在核物理和放射化学领域，术语secular equilibrium（世俗平衡）指的是一种状态，其中母体放射性同位素的活性与其子同位素的活性在较长时间内相等。这个概念对于理解放射性材料及其衰变过程的行为至关重要。当放射性物质衰变时，它转变为另一种元素或同位素，称为子产品。最初，子产品的活性为零，因为它刚刚形成。然而，随着时间的推移，母体同位素继续衰变，子产品逐渐积累，其活性增加。最终，会达到一个点，此时子产品的生成速率等于其衰变速率。这种平衡导致了一个稳定的情况，称为secular equilibrium（世俗平衡）。secular equilibrium的重要性体现在多个应用中，包括放射性测年、核医学和环境监测。例如，在放射性测年中，科学家利用secular equilibrium的原理来确定地质样本的年龄。通过测量母体与子同位素的比例，他们可以计算自材料上次加热或以其他方式改变以来经过的时间。这种方法提供了对我们星球历史和生命演化的宝贵见解。在核医学中，secular equilibrium在使用放射性同位素进行诊断和治疗方面发挥着至关重要的作用。某些医疗程序涉及给予放射性示踪剂，这些示踪剂发出可被成像设备检测到的辐射。理解这些同位素的动力学，尤其是在secular equilibrium方面，使医疗专业人员能够优化剂量和治疗时间，确保最大疗效，同时将患者暴露于辐射的风险降到最低。此外，secular equilibrium对于监测环境放射性非常重要。在受到核事故或污染影响的地区，科学家评估放射性材料的水平，以评估潜在的健康风险。通过理解secular equilibrium的动态，他们可以预测某些同位素将保持危险的时间，并制定修复策略。尽管secular equilibrium的重要性不言而喻，但对于那些刚接触核科学的人来说，它可能会很复杂。它需要对放射性衰变链及不同同位素之间的关系有扎实的理解。然而，一旦掌握了这个概念，它将为深入理解支配我们环境的自然过程以及我们在医学和工业中使用的技术打开一扇大门。总之，secular equilibrium是放射性及其应用研究中的基本概念。它代表了母体和子同位素之间的平衡状态，使地质学、医学和环境科学等领域的各种实际应用成为可能。随着我们继续探索原子世界的奥秘，理解secular equilibrium将对研究人员和从业者至关重要，为造福整个社会的进步铺平道路。