Abstract
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.
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References
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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PERRIER, C., SEGRÈ, E. Technetium : The Element of Atomic Number 43. Nature 159, 24 (1947). https://doi.org/10.1038/159024a0
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DOI: https://doi.org/10.1038/159024a0
