parent isotope

简明释义

母同位素

英英释义

例句

1.Carbon-14 is a well-known parent isotope (母同位素) used in radiocarbon dating.

碳-14是一个著名的母同位素，用于放射性碳定年。

2.The decay of a parent isotope (母同位素) can be used to date ancient rocks.

母同位素的衰变可以用来测定古老岩石的年龄。

3.Geologists often study the ratio of daughter isotopes to parent isotopes (母同位素) to understand the age of mineral deposits.

地质学家常常研究女儿同位素与母同位素的比率，以了解矿床的年龄。

4.In nuclear medicine, the decay of a parent isotope (母同位素) can help in diagnosing diseases.

在核医学中，母同位素的衰变可以帮助诊断疾病。

5.The half-life of a parent isotope (母同位素) determines how long it takes for half of it to decay.

母同位素的半衰期决定了其衰变到一半所需的时间。

作文

In the field of geology and archaeology, the concept of a parent isotope is crucial for understanding the age of rocks and fossils. A parent isotope, defined as the original radioactive isotope in a decay series, undergoes a transformation into a stable daughter isotope over time. This process is known as radioactive decay, and it occurs at a predictable rate, often expressed as the half-life of the parent isotope. The half-life is the time required for half of the parent isotope in a sample to decay into its daughter isotopes.One of the most well-known examples of a parent isotope is Uranium-238 (U-238), which decays into Lead-206 (Pb-206). This decay process allows scientists to date ancient rocks and geological formations by measuring the ratio of U-238 to Pb-206. By knowing the half-life of U-238, which is approximately 4.5 billion years, researchers can determine how long it has been since the rock was formed.The significance of parent isotopes extends beyond geology; they also play an essential role in archaeology. Radiocarbon dating, for instance, utilizes Carbon-14 (C-14) as a parent isotope. C-14 is produced in the atmosphere and absorbed by living organisms. Once an organism dies, it stops taking in C-14, and the existing C-14 begins to decay into Nitrogen-14 (N-14) at a known rate. This allows archaeologists to date organic materials up to about 50,000 years old, providing insights into human history and prehistoric life.Understanding parent isotopes also has implications in the field of nuclear medicine. Certain isotopes used in medical imaging and treatment are also parent isotopes. For example, Technetium-99m (Tc-99m) is widely used in diagnostic imaging. It decays into Technetium-99 (Tc-99), which is less useful for imaging but still important in various applications. The knowledge of how these isotopes behave helps medical professionals to use them effectively and safely.In summary, the study of parent isotopes is vital across multiple scientific disciplines. Their predictable decay rates provide a reliable method for dating geological and archaeological samples, contributing to our understanding of Earth's history and human civilization. Moreover, their applications in medicine showcase the practical benefits of understanding radioactive isotopes. As research continues to advance, the role of parent isotopes in science will undoubtedly expand, leading to new discoveries and technologies that enhance our knowledge of the world around us.

在地质学和考古学领域，母同位素的概念对于理解岩石和化石的年龄至关重要。母同位素被定义为衰变系列中的原始放射性同位素，它随着时间的推移转变为稳定的女儿同位素。这个过程称为放射性衰变，它以可预测的速率发生，通常以母同位素的半衰期来表示。半衰期是指样本中一半的母同位素衰变为其女儿同位素所需的时间。最著名的母同位素之一是铀-238（U-238），它衰变为铅-206（Pb-206）。这一衰变过程使科学家能够通过测量U-238与Pb-206的比率来确定古老岩石和地质形成的年代。通过了解U-238的半衰期，约为45亿年，研究人员可以确定岩石形成以来经过了多长时间。母同位素的重要性不仅限于地质学；它们在考古学中也发挥着重要作用。例如，放射性碳定年法利用碳-14（C-14）作为母同位素。C-14在大气中产生并被生物体吸收。一旦生物体死亡，它就不再吸收C-14，现有的C-14开始以已知的速度衰变为氮-14（N-14）。这使考古学家能够对有机材料进行最多约5万年的定年，从而提供关于人类历史和史前生活的见解。理解母同位素在核医学领域也有重要意义。某些用于医学成像和治疗的同位素也是母同位素。例如，锝-99m（Tc-99m）广泛用于诊断成像。它衰变为锝-99（Tc-99），后者在成像中不再那么有用，但在各种应用中仍然重要。了解这些同位素的行为有助于医疗专业人员有效且安全地使用它们。总之，母同位素的研究在多个科学学科中至关重要。它们可预测的衰变速率提供了一种可靠的方法来对地质和考古样本进行定年，促进了我们对地球历史和人类文明的理解。此外，它们在医学中的应用展示了理解放射性同位素的实际好处。随着研究的不断推进，母同位素在科学中的作用无疑将扩大，带来新的发现和技术，增强我们对周围世界的认识。