Radioactivity produced in Scandium by Fast Neutrons

Abstract

ON irradiating scandium (45Sc) with fast neutrons of energy ≤20 × 106 e.v., Pool, Cork and Thornton1 observed two positron-emitting radioactive isotopes of scandium of half-lives 52 hours (‘strong intensity’) and 4 hours (‘very strong intensity’) respectively. With neutrons of <10 × 106 e.v., neither period could be observed. Previously Walke2 had given the… (More)
DOI: 10.1038/141510a0

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