K. R. Rao

During the past sixty years, a large amount of work has been devoted to producing elements that do not occur in nature; this is the subject matter of artificial nucleosynthesis. In fact, the story goes back to the thirties when Enrico Fermi produced lead by b -decay, after bombarding thallium with neutrons. Elements up to atomic number 94 occur naturally; elements of atomic number larger than 94 are produced either in nuclear reactors or by using accelerators. These artificial or synthetic elements are not stable.....

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