- Conference date: 26-29 August 2003
- Location: Tours (FRANCE)
The effect of the nuclear shell structure on the heavy‐ion fusion reaction was investigated for the reaction systems 82Se + 138Ba, 82Se + 134Ba, 16O + 204 Pb, 86Kr + 134Ba, 86Kr + 138Ba, and 82Se + nat.Ce. Evaporation residues for these fusion reactions were measured using a recoil mass separator (JAERI‐RMS) near Coulomb barrier region. The measured evaporation residue cross sections for the reactions 82Se + 138Ba and 86Kr + 138Ba were two orders of magnitude and one order of magnitude larger than those for the reaction 82Se + 134Ba and 86Kr + 134Ba, respectively, at the excitation energy region of 10 ∼ 30 MeV. The evaporation residue cross sections were compared with those of the other reaction systems that make the same or similar compound nuclei as the present reaction systems. It was found that the evaporation residue cross sections correlate strongly with the sum of the shell energies for both projectile and target nuclei, i.e., the evaporation residue cross sections increase as the sum of the shell energy decreases.
- Fusion reactions
- Chemical reaction cross sections
- Compound nucleus reactions
- Nuclear reaction cross sections
- Excited state reaction dynamics
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