Radioactive Half-Life放射性半衰期
The radioactive half-life for a given radioisotope is the time for half the radioactive nuclei in any sample to undergo radioactive decay. After two half-lives, there will be one fourth the original sample, after three half-lives one eight the original sample, and so forth. 某种放射性同位素的半衰期是指在任何样品中,一半的放射性核素经历放射性衰变所需的时间。经过两个半衰期后,剩余的样品量将为原来的四分之一;经过三个半衰期后,剩余的样品量将为原来的八分之一,依此类推。
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Graph of Radioactive Decay放射性衰变曲线
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