Effects of Breakup of Weakly Bound Projectile and Neutron Transfer on Fusion Reactions

Journal Article · Thu Nov 02 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2398820· OSTI ID:20891730

Lin, C J; Zhang, H Q; Yang, F; Ruan, M; Liu, Z H; Wu, X K; Zhou, P; Zhang, C L; Zhang, G L; An, G P; Jia, H M; Xu, X X ^[1]

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1. China Institute of Atomic Energy, P.O. Box 275 (10), Beijing 102413 (China)

The excitation functions of elastic and quasielastic scattering at backward angles are measured for the systems 16O + 152Sm , 6,7Li + 208Pb. The barrier distributions are extracted from these measured excitation functions and compared with the corresponding fusion barrier distributions. Except some details, the barrier distributions derived from the data of fusion and elastic/quasielastic scattering are almost the same for the tightly bound reaction systems. For the reaction systems with weakly bound projectile, the barrier distributions extracted from quasielastic scattering are obviously different the fusion barrier distributions. However, the barrier distributions extracted from the excitation functions of the quasielastic scattering plus breakup are almost the same as the one extracted from the complete fusion data. This result means that barrier distribution not only bears the information of nuclear structures but also contains the knowledge of reaction mechanisms. In addition, the measured barrier distribution of 32S + 96Zr is flat and extends to lower energy due to the coupling of neutron transfer with positive Q-values, which will result in a significant enhancement effusion cross sections at the subbarrier energies. However, our results show that the complete fusion of the weakly bound projectile with heavy target is suppressed at the above barrier energies as compared with the model predictions.

• OSTI ID: 20891730
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 865; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREAKUP REACTIONS
ELASTIC SCATTERING
EXCITATION FUNCTIONS
LEAD 208 TARGET
LITHIUM 6 BEAMS
LITHIUM 6 REACTIONS
LITHIUM 7 BEAMS
LITHIUM 7 REACTIONS
NEUTRON TRANSFER
NUCLEAR STRUCTURE
OXYGEN 16 BEAMS
OXYGEN 16 REACTIONS
QUASI-ELASTIC SCATTERING
REACTION KINETICS
SAMARIUM 152 TARGET
SULFUR 32 BEAMS
SULFUR 32 REACTIONS
TRANSFER REACTIONS
ZIRCONIUM 96 TARGET