Abstract
Measurements of alpha particle induced fission of actinide nuclei and fission of the composite system 170Yb formed in 12C and 20Ne bombardments both show significantly greater neutron emission prior to fission than is consistant with current statistical models. Implications of these results are discussed in the context of possible extreme models: 1) the enhancement of fission at low excitation energies due to shell effects; 2) the inhibition of fission at high excitations due to a limiting of the fission width and 3) the possibility of significant neutron emission during the descent from saddle to scission. In addition the apparent incompatability between current models of incomplete fusion processes and the analysis of light heavy ion induced fission which ignore incomplete fusion is discussed.
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Britt, H.C., Gavron, A. (1982). Fast and slow fission. In: David, P., Mayer-Kuckuk, T., van der Woude, A. (eds) Dynamics of Nuclear Fission and Related Collective Phenomena. Lecture Notes in Physics, vol 158. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0021501
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DOI: https://doi.org/10.1007/BFb0021501
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