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到目前为止,全世界拥有的金属锎还不到5克,售价每克高达1000万美元。锎是人造金属,它是1952年美国在进行氢弹爆炸试验时才第一次探测到的。自然界的锎在地球演化过程中早就消亡了。因为既使锎的同位素中半衰期最长的锎—251,也不过900年。而地球已有45亿年的高龄了。因此,自然界不可能有锎的踪迹。要想得到锎,只有用重金属离子“炮弹”轰击某些物质的原子核的人工制造方法。据估算,
So far, the world has less than 5 grams of metal 售, the price of up to 10 million US dollars per gram.锎 is a man-made metal that was first detected by the United States in 1952 when it was tested for hydrogen bomb explosions. The natural world has already vanished in the evolution of the earth. Because even the longest half-life 锎 -251 isotopes, but also 900 years. The Earth has 4.5 billion years old. Therefore, there can be no trace of the natural world. In order to get it, only the artificially made method of bombarding the nuclei of certain matter with heavy metal ion “shells”. According to estimation,