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Detailed studies of isotopes of praseodymium and cerium of mass 137.

McGill University
Publication Date
  • Physics.
  • Chemistry


The mass separation of the radioactive isotopes of an element is often an essential preparation for a study of the radiations. When neighbouring isotopes have similar disintegration periods, the assignment of observed radiations to a particular isotope is otherwise difficult. Accurate yield curves, or cross bombardment with different particles, can make assignments more probable. Careful "milking off" of daughter activities by chemical means may also be very helpful.

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