Disentangling the reaction mechanisms of weakly bound nuclei |
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Authors: | PRS Gomes I Padron E Crema OA Capurro JO Fernández Niello GV Marti A Arazi M Trotta J Lubian ME Ortega AJ Pacheco MD Rodríguez JE Testoni RM Anjos LC Chamon M Dasgupta DJ Hinde K Hagino |
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Institution: | 1. Instituto de Física, Universidade Federal Fluminense, Av. Litoranea s/n, Gragoatá, Niterói, R.J., 24210-340, Brazil;2. CEADEN, Havana, Cuba;3. Departamento de Física Nuclear, Universidade de São Paulo, Caixa Postal 66318, 05315-970, São Paulo, S.P., Brazil;4. Laboratorio Tandar, Departamento de Física, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, (1429) Buenos Aires, Argentina;5. INFN, Sezione di Napoli, I-80126 Napoli, Italy;6. Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia;g Department of Physics, Tohoku University, Sendai 980-8578, Japan |
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Abstract: | Complete and incomplete fusion cross sections for the 9Be + 144Sm reaction have been measured at near-barrier energies, using the delayed X-ray detection technique. At above-barrier energies these show a suppression of complete fusion for this weakly bound projectile on an intermediate mass target. The suppression factor, attributed to 9Be break-up, was deduced from a comparison of complete fusion yields with coupled-channels calculations, and appears consistent with measured incomplete fusion product yields. At ∼10%, it is considerably smaller than the value of ∼30% previously found for a 208Pb target. Simultaneous measurements of elastic and inelastic scattering permit a clearer picture of the reaction mechanisms. |
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