Hindrance of complete fusion in the {sup 8}Li+{sup 208}Pb system at above-barrier energies

Journal Article · Thu Oct 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.044605· OSTI ID:21293953

Aguilera, E F; Martinez-Quiroz, E; Rosales, P; Kolata, J J; DeYoung, P A; Peaslee, G F; Mears, P; Guess, C; Becchetti, F D; Lupton, J H; Chen, Yu ^[1]

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1. Departamento de Aceleradores, ININ, A. P. 18-1027, C. P. 11801, Mexico, D.F. (Mexico)

The {sup 211,212}At yields resulting from the interaction of the radioactive projectile {sup 8}Li with a {sup 208}Pb target have been measured at energies between 3 and 8.5 MeV above the Coulomb barrier. They are signatures for fusion of the whole charge but not necessarily the whole mass of the projectile, so they are included in a corresponding operational definition of complete fusion. Within this definition, a fusion suppression factor of 0.70{+-}0.02 (stat.) {+-}0.04 (syst.) is deduced from a comparison to a one-dimensional barrier-penetration-model calculation using parameters extrapolated from values for {sup 6,7}Li+{sup 209}Bi and {sup 9}Be+{sup 208}Pb taken from the literature. Possible incomplete fusion processes are discussed and the results are fitted with a phenomenological model assuming breakup prior to fusion followed by capture of a {sup 7}Li fragment.

• OSTI ID: 21293953
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTATINE 211
ASTATINE 212
BERYLLIUM 9
BISMUTH 209
CAPTURE
COMPARATIVE EVALUATIONS
COULOMB FIELD
INTERACTIONS
LEAD 208
LITHIUM 7
LITHIUM 8
MASS
MEV RANGE 01-10
ONE-DIMENSIONAL CALCULATIONS