Sub-barrier fusion enhancement with radioactive 134Te

Journal Article · Tue Jan 01 04:00:00 EST 2013 · Physical Review C

OSTI ID:1087051

Kohley, Zachary W ^[1]; Liang, J Felix ^[1]; Shapira, Dan ^[1]; Gross, Carl J ^[1]; Varner, Jr, Robert L ^[1]; Allmond, James M ^[1]; Kolata, Jim J ^[2]; Mueller, Paul Edward ^[1]; Roberts, Amy ^[2]

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1. ORNL
2. University of Notre Dame, IN

The fusion cross sections of radioactive 134Te + 40Ca 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 130Te + 58,64Ni, 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.

• Research Organization: Oak Ridge National Laboratory (ORNL); High Temperature Materials Laboratory
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1087051
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 064612 Vol. 87
• Country of Publication: United States
• Language: English