Abstract
Masses, charges and kinetic energies of light fission fragments from the reactions232U(n, f) and239Pu(n, f) induced by thermal neutrons have been measured on the Cosi fan tutte spectrometer of the Institut Laue-Langevin in Grenoble. Both at very high and very low kinetic energies marked fine structures in the mass yields and odd-even staggerings in the charge yields are observed. In the framework of a scission point model the results are shown to point to compact and deformed scission configurations, respectively, where at scission the fragments carry no intrinsic excitation energy. The two limiting processes may, therefore, be called cold compact fission (usually known as cold fission) and cold deformed fission. The latter process as a general phenomenon of low energy fission has come into focus only recently.
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Dedicated to Peter Armbruster on the occasion of his 60th birthday
It is a pleasure to acknowledge many fruitful discussions with Peter Armbruster on the topics of cold fission and its relation to the inverse reaction, viz. cold fusion. Many details of the interpretations given are the outcome of discussions with C. Signarbieux. Part of this work was performed in collaboration with N. Boucheneb, G. Medkour, M. Asghar, G. Barreau, T.P. Doan and B. Leroux. This work has been funded by the German Federal Minister for Research and Technology (BMFT) under the contract number 06 Tü 243.
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Kaufmann, J., Mollenkopf, W., Gönnenwein, F. et al. Cold deformed fission in232U(n, f) and239Pu(n, f). Z. Physik A - Hadrons and Nuclei 341, 319–326 (1992). https://doi.org/10.1007/BF01283541
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DOI: https://doi.org/10.1007/BF01283541