Last Updated
：2025/12/08
secular equilibrium
Noun
Japanese Meaning
核物理学において、放射性同位体が、その親核種の崩壊により同じ速度で生成され、同時に崩壊することで、存在量が一定に保たれる状態。
（ plural ）
（ plural ）
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(nuclear physics) The situation of the quantity of a radioisotope remaining constant because it is produced (by decay of a parent isotope) at the same rate that it decays.
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secular equilibrium
During the long decay chain experiment, the researchers observed secular equilibrium between the parent and daughter isotopes, where the daughter's activity stopped changing over time.
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During the long decay chain experiment, the researchers observed secular equilibrium between the parent and daughter isotopes, where the daughter's activity stopped changing over time.
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