Suppression of fusion by breakup: Resolving the discrepancy between the reactions of {sup 9}Be with {sup 208}Pb and {sup 209}Bi

Journal Article · Mon Feb 15 04:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.024608· OSTI ID:21386612

Dasgupta, M; Hinde, D J; Sheehy, S L; Bouriquet, B ^[1]

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1. Department of Nuclear Physics, Research School of Physics and Engineering, Building 57, Australian National University, Canberra, ACT 0200 (Australia)

Complete fusion cross sections for {sup 9}Be incident on {sup 208}Pb and {sup 209}Bi have been measured at energies greater than the fusion barrier to investigate the large differences in their reported complete fusion cross sections. Relative xn and fission cross sections are in good agreement. Thus, it is concluded that the differences arise from errors in absolute normalization in the previous measurements. The present measurements show that the above-barrier complete fusion cross sections for the reactions of {sup 9}Be with {sup 209}Bi and {sup 208}Pb are very similar, which resolves the previously observed anomaly. Complete fusion for the reaction of {sup 9}Be with {sup 209}Bi is found to be suppressed by {approx}32% compared to the expectations of a single-barrier penetration model, which is in close agreement with the value previously determined for the reaction with {sup 208}Pb.

• OSTI ID: 21386612
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BERYLLIUM 9
BERYLLIUM ISOTOPES
BISMUTH 209
BISMUTH ISOTOPES
CROSS SECTIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
HEAVY NUCLEI
ISOTOPES
LEAD 208
LEAD ISOTOPES
LIGHT NUCLEI
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
STABLE ISOTOPES