IN 1937, Perrier and Segrè showed that radioactive isotopes of element 43 could be formed by neutron or deuteron bombardment of molybdenum1. Several chemical properties of element 43 were established at that time, and some nuclear properties of the spectral isotopes. These isotopes were found after nuclear bombardments by the 37-in. cyclotron of the Radiation Laboratory of the University of California.
Perrier, C., and Segrè, E., J. Chem. Phys., 5, 712 (1937); 6 (1938).
Segrè, E., and Wu, C. S., Phys. Rev., 57, 552 (1940).
Paneth, F. A., p. 8 of this issue of Nature.
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (2020)
Frontiers in Chemistry (2020)
Nachrichten aus der Chemie (2019)
Chemical Science (2019)