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Title:
Physical Evidence for the Division of Heavy Nuclei under Neutron Bombardment
Authors:
Frisch, O. R.
Affiliation:
AA(Institute of Theoretical Physics, University, Copenhagen. Jan. 16.)
Publication:
Nature, Volume 143, Issue 3616, pp. 276 (1939). (Nature Homepage)
Publication Date:
02/1939
Origin:
NATURE
DOI:
10.1038/143276a0
Bibliographic Code:
1939Natur.143..276F

Abstract

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 `fission' process.
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