https://doi.org/10.1140/epja/i2013-13057-0
Regular Article - Experimental Physics
On the near-barrier fusion of the proton-halo 8B + 58Ni system
19887
Instituto de Física, Universidade Federal Fluminense, Av. Litoranea s/n, Gragoatá, Niterói, R.J., 24210-340, Brazil
29887
Departamento de Fisica, Instituto Tecnológico de Aeronáutica, 12228-900, Sao José dos Campos, São Paulo, Brazil
39887
Instituto de Física, Universidade de São Paulo, CP 66318, 05389-970, São Paulo, Brazil
49887
Departamento de Aceleradores, Instituto Nacional de Investigaciones, Apartado Postal 18-1027, C.P. 11801, México, D.F., Mexico
* e-mail: paulogom@if.uff.br
Received:
4
March
2013
Revised:
1
April
2013
Accepted:
11
April
2013
Published online:
17
May
2013
We have performed two independent calculations, without any free parameter, to predict the near-barrier fusion cross section for the proton-halo 8B + 58Ni system, for which data were recently reported. Standard coupled channel calculations predict fusion cross sections smaller than the data, while CDCC calculations for the absorption cross section (fusion + transfer + inelastic cross sections) agree with the data above the barrier, although transfer cross sections are calculated to have non-negligible cross section at this energy regime. At sub-barrier energies, region where transfer cross sections are particularly important, the CDCC calculations overpredict the data. The fusion data of the 8B + 58Ni system fail to follow the systematics of other weakly bound nuclei and the UFF curve and do not agree with the fusion data of the 8B + 28Si system. We try to explain this anomalous behaviour.
© SIF, Springer-Verlag Berlin Heidelberg, 2013
