Near-barrier fusion of Sn+Ni and Te+Ni Systems: Examining the influence of neutron transfer couplings

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Physical Review Letters

OSTI ID:1042832

Liang, J Felix ^[1]; Kohley, Zachary W ^[1]; Shapira, Dan ^[1]; Varner, Jr, Robert L ^[1]; Gross, Carl J ^[1]; Allmond, J M ^[2]; Lagergren, Karin B ^[1]; Mueller, Paul Edward ^[1]

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1. ORNL
2. Oak Ridge National Laboratory (ORNL)

The fusion excitation functions for radioactive 132Sn+58Ni and stable 130Te+58;64Ni were measured at energies near the Coulomb barrier. The role of transfer couplings in heavy-ion fusion was examined through a comparison of Sn+Ni and Te+Ni systems, which have large variations in the number of positive Q-value nucleon transfer channels. In contrast with previous comparisons, where increased sub-barrier fusion cross sections were observed in the systems with positive Q-value neutron transfer channels, the reduced excitation functions were equivalent for the different Sn+Ni and Te+Ni systems. The present results suggest a significant change in the influence of transfer couplings on the fusion process for the Sn+Ni and Te+Ni systems.

• Research Organization: Oak Ridge National Laboratory (ORNL); Holifield Radioactive Ion Beam Facility
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1042832
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 107; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COULOMB FIELD
CROSS SECTIONS
EXCITATION FUNCTIONS
NEUTRON TRANSFER
NUCLEONS
Q-VALUE