期刊
PHYSICAL REVIEW C
卷 87, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.87.064612
关键词
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资金
- DOE Office of Nuclear Physics
- NSF [PHY11-02511, PHY09-69456]
- Direct For Mathematical & Physical Scien
- Division Of Physics [969456] Funding Source: National Science Foundation
The fusion cross sections of radioactive Te-134 + Ca-40 were measured at energies above and below the Coulomb barrier. The evaporation residues produced in the reaction were detected in a zero-degree ionization chamber providing high efficiency for inverse kinematics. Both coupled-channel calculations and comparison with similar Sn + Ca systems indicate an increased sub-barrier fusion probability that is correlated with the presence of positive Q-value neutron transfer channels. In comparison, the measured fusion excitation functions of Te-130 + Ni-58,Ni-64, which have positive Q-value neutron transfer channels, were accurately reproduced by coupled-channel calculations including only inelastic excitations. The results demonstrate that the coupling of transfer channels can lead to enhanced sub-barrier fusion but this is not directly correlated with positive Q-value neutron transfer channels in all cases.
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