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Author Majumdar, N. ♦ Bhattacharya, P. ♦ Biswas, D. C. ♦ Choudhury, R. K. ♦ Nadkarni, D. M. ♦ Saxena, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ CARBON 12 REACTIONS ♦ HEAVY ION FUSION REACTIONS ♦ EXCITATION FUNCTIONS ♦ FISSION FRAGMENTS ♦ ANGULAR DISTRIBUTION ♦ OXYGEN 16 REACTIONS ♦ THORIUM 232 TARGET ♦ FISSION ♦ POTENTIALS ♦ ANISOTROPY ♦ COULOMB FIELD ♦ DEFORMED NUCLEI ♦ FLUORINE 19 REACTIONS
Abstract In the present work we have measured fission fragment angular distributions and fusion excitation functions for the systems {sup 12}C, {sup 16}O+{sup 232}Th at energies around the Coulomb barrier. These results along with the results of our earlier measurements on {sup 19}F + {sup 232}Th system were analyzed following Hinde {ital et} {ital al}. [Phys. Rev. Lett. {bold 74}, 1295 (1995)] where it was pointed out that the anomalous fission fragment angular distributions seen in heavy ion reactions below the Coulomb barrier can be due to possible occurrence of quasifission events caused by the interaction of the projectile with the tip of the deformed target nucleus. The present data do not show the expected saturation behavior of the fission fragment anisotropy at sub-barrier energies for the {sup 12}C+{sup 232}Th system which exhibits different behavior of the fission fragment anisotropy in the sub-barrier region as compared to the other two systems. The present measurements using different projectiles on the same target nucleus do not seem to conform to the expected behavior of the quasifission mechanism to be caused by the interaction of the projectile with the tip of the deformed target nucleus. {copyright} {ital 1996 The American Physical Society.}
ISSN 05562813
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-02-01
Publisher Place United States
Journal Physical Review, C
Volume Number 53
Issue Number 2


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