radioactivity: Radioactive Disintegration Series
Radioactive Disintegration Series
The product of a radioactive decay may itself be unstable and undergo further decays, by either alpha or beta emission. Thus, a succession of unstable elements may be produced, the series continuing until a nucleus is produced that is stable. Such a series is known as a radioactive disintegration, or decay, series. The original nucleus in a decay series is called the parent nucleus, and the nuclei resulting from successive disintegrations are known as daughter nuclei.
There are four known radioactive decay series, the members of a given series having mass numbers that differ by jumps of 4. The series beginning with uranium-238 and ending with lead-206 is known as the 4
Because the rates of disintegration of the members of a radioactive decay series are constant, the age of rocks and other materials can be determined by measuring the relative abundances of the different members of the series. All of the decay series end in a stable isotope of lead, so that a rock containing mostly lead as compared to heavier elements would be very old.
Sections in this article:
- Introduction
- Discovery of Radioactivity
- Radioactive Disintegration Series
- Half-Life of an Element
- Radioactive Decay
- Gamma Radiation
- Beta Radiation
- Alpha Radiation
- Radioactive Emissions
- Bibliography
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