Observation of Anisotropy in the Fission Decay of Nuclei with Vanishing Fission Barrier
B. B. BackChemistry Division, Argonne National Laboratory, Argonne, Illinois 60439H.-G. ClercChemistry Division, Argonne National Laboratory, Argonne, Illinois 60439R. R. BettsChemistry Division, Argonne National Laboratory, Argonne, Illinois 60439B. G. GlagolaChemistry Division, Argonne National Laboratory, Argonne, Illinois 60439B. D. WilkinsChemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
1981en
ABI
Abstract
Fission angular distributions for nuclei formed by fusion of $^{32}\mathrm{S}$ and $^{197}\mathrm{Au}$, $^{232}\mathrm{Th}$, $^{238}\mathrm{U}$, $^{248}\mathrm{Cm}$ show an appreciable anisotropy although spherical saddle-point configurations are predicted for these systems by the rotating-liquid-drop model. The analysis of the data in terms of the statistical model indicate that composite systems of $Z=106, 108, \mathrm{and} 112$ have been formed with deformations $\ensuremath{\beta}<~0.35$.
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