Fusion of 124,132Sn with 40,48Ca

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Physical Review, C (Nuclear Physics)

DOI:https://doi.org/10.1103/PhysRevC.85.054603· OSTI ID:1039627

Kolata, Jim J ^[1]; Roberts, Amy ^[1]; Howard, A ^[1]; Shapira, Dan ^[2]; Liang, J Felix ^[2]; Gross, Carl J ^[2]; Varner, Jr, Robert L ^[2]; Villano, Anthony ^[1]; Amro, H ^[1]; Loveland, Walter ^[3]; Chavez, E ^[4]

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1. University of Notre Dame, IN
2. ORNL
3. Oregon State University
4. Instituto de Fisica, Mexico

Fusion excitation functions for the reactions of {sup 124,132}Sn with {sup 40,48}Ca were measured at energies near and below the Coulomb barrier. Weak sub-barrier fusion enhancement accounted for by coupling to the first 2{sup +} and 3{sup -} states in the target and projectile was observed for {sup 124,132}Sn+{sup 48}Ca. However, the {sup 124,132}Sn+{sup 40}Ca fusion cross sections are very strongly enhanced below the barrier and this difference survives even after correcting for trivial size effects. Although the enhancement appears to be related to the existence of large positive Q values for neutron transfer reactions, it is not proportional to the magnitudes of those Q values, which are much larger for {sup 132}Sn+{sup 40}Ca than for {sup 124}Sn+{sup 40}Ca.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1039627
• Journal Information: Physical Review, C (Nuclear Physics), Vol. 85, Issue 5; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB FIELD
CROSS SECTIONS
EXCITATION FUNCTIONS
NEUTRON TRANSFER
PROJECTILES
TARGETS