“K-A decay”的概念、定义、翻译、参考文献-科学参考

单词	K-A decay
释义	K-A decay [`kā`ā di´kā] ^{NUCLEAR PHYSICS} Radioactive decay of potassium-40 (⁴⁰K) to argon-40 (⁴⁰A), as the nucleus of potassium captures an orbital electron and then decays to argon-40; the ratio of ⁴⁰K to ⁴⁰A is used to determine the age of rock (K-A age).
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