Isotope Distributions in the Reaction of U 238 with U </…
1978; American Physical Society; Volume: 41; Issue: 7 Linguagem: Inglês
10.1103/physrevlett.41.469
ISSN1092-0145
AutoresM. Schädel, J. V. Kratz, H. Ahrens, W. Brüchle, G. Franz, H. W. Gäggeler, I. Warnecke, G. Wirth, G. Herrmann, Ν. Trautmann, M. Weis,
Tópico(s)Atomic and Molecular Physics
ResumoRadiochemically determined cross sections $\ensuremath{\sigma}(Z, A)$ were used to construct charge and mass distributions for the reaction of 1785-MeV $^{238}\mathrm{U}$ ions with thick $^{238}\mathrm{U}$ targets. Fission of the colliding nuclei is found to dominate. For the surviving uraniumlike fragments an enhancement of yields compared to the Kr + U and Xe + U reactions is observed. The formation of heavy actinides is shown to be associated with the low-energy tails of the broad excitation energy distributions in damped collisions.
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