Is Fusion Inhibited for Weakly Bound Nuclei?

Journal Article · Wed Jan 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.30· OSTI ID:435245

Takahashi, J; Munhoz, M; Szanto, E M; Carlin, N; Added, N; Suaide, A A; de Moura, M M; Liguori Neto, R; Szanto de Toledo, A ^[1]; Canto, L F ^[2]

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1. Universidade de Sao Paulo, Institute de Fisica, Departamento de Fisica Nuclear, Caixa Postal 66318, 05389-970 Sao Paulo, Sao Paulo, (Brasil)
2. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970 Rio de Janeiro, RJ, (Brasil)

Complete fusion of light radioactive nuclei is predicted to be hindered at near-barrier energies. This feature is investigated in the case of the least bound stable nuclei. Evaporation residues resulting from the {sup 6,7}Li+{sup 9}Be and {sup 6,7}Li+{sup 12}C fusion reactions have been measured in order to study common features in reactions involving light weakly bound nuclei. The experimental excitation functions revealed that the fusion cross section is significantly smaller than the total reaction cross section and also smaller than the fusion cross section expected from the available systematics. A clear correlation between the fusion probability and nucleon (cluster) separation energy has been established.The results suggest that the breakup process has a strong influence on the hindrance of the fusion cross section. {copyright} {ital 1996} {ital The American Physical Society}

• OSTI ID: 435245
• Journal Information: Physical Review Letters, Vol. 78, Issue 1; Other Information: PBD: Jan 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BERYLLIUM 9 TARGET
LITHIUM 6 REACTIONS
LITHIUM 7 REACTIONS
FUSION YIELD
CARBON 12 TARGET
IMPACT FUSION
RADIOACTIVE MATERIALS
EXCITATION FUNCTIONS
CROSS SECTIONS
EVAPORATION
CORRELATIONS