Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment

@article{Frisch1939PhysicalEF,
  title={Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment},
  author={O. Frisch},
  journal={Nature},
  year={1939},
  volume={143},
  pages={276-276}
}
  • O. Frisch
  • Published 1939
  • Materials Science
  • Nature
FROM chemical evidence, Hahn and Strassmann1 conclude that radioactive barium nuclei (atomic number Z = 56) are produced when uranium (Z = 92) is bombarded by neutrons. It has been pointed out2 that this might be explained as a result of a ‘fission’ of the uranium nucleus, similar to the division of a droplet into two. The energy liberated in such processes was estimated to be about 200 Mev., both from mass defect considerations and from the repulsion of the two nuclei resulting from the… Expand
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References

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Disintegration of Uranium by Neutrons: a New Type of Nuclear Reaction
ON bombarding uranium with neutrons, Fermi and collaborators1 found that at least four radioactive substances were produced, to two of which atomic numbers larger than 92 were ascribed. FurtherExpand
Künstliche Umwandlungsprozesse bei Bestrahlung des Thoriums mit Neutronen; Auftreten isomerer Reihen durch Abspaltung von α-Strahlen
ZusammenfassungEs werden die bei der Bestrahlung von Thorium mit langsamen und schnellen Neutronen auftretenden Prozesse untersucht. Es zeigte sich, daß vier Umwandlungsreihen auftreten. Die eineExpand