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同位素这个名词的西文isotope是英国人索迪(F.Soddy,1877—1956)于1911年开始使用的。后来,另一位英国人阿斯顿(F.W.Aston,1877—1945),在1919年制成了质谱仪,可以用来分离不同质量的粒子,并且测定它们的质量。这就把研究同位素的方法提高了一大步。阿斯顿先后利用质谱仪发现了很多元素的同位素,他在71种元素之中,陆续找到了202种同位素之多,这为我们认识同位素,开始积累了大量资料。最引人关注的是,氢有没有同位素的问
The isotope is the term isotope of English is the British Sody (F.Soddy, 1877-1956) began in 1911. Later, another British Aston (F.W. Aston, 1877-1945) made a mass spectrometer in 1919 that could be used to separate particles of different qualities and determine their mass. This takes a big step forward in the way we study isotopes. Aston has used the mass spectrometer to find a number of isotopes of elements. Among the 71 elements, he has found as many as 202 kinds of isotopes, which gives us a great deal of knowledge about isotopes. The most interesting is that there is no isotope of hydrogen asked