Near-barrier fusion of proton rich systems

36th Symposium on Nuclear Physics

Aguilera, E.F.^1 ; Martinez-Quiroz, E.^1 ; Amador-Valenzuela, P.^1,2 ; Gómez-Camacho, A.^1 ; Kolata, J.J.^3

Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, C. P. 11801, México, DF, Mexico^1

Universidad Autónoma Del Estado de México, Código Postal 50000, Toluca, Mexico^2

Physics Department, University of Notre Dame, Notre Dame, IN 46556-5670, United States^3

关键词: Barrier energy;    Barrier measurements;    Fusion mechanism;    Neutron halos;    Proton halos;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/492/1/012002/pdf
DOI  :  10.1088/1742-6596/492/1/012002

来源: IOP

【 摘 要 】

Recent near-barrier measurements for fusion of the proton-halo system8B +58Ni (Aguilera E F et al. 2011 Pys. Rev. Lett. 107 092701) showed unexpected results. In contrast to previous results for neutron-halo systems, for instance, the respective fusion cross sections are enhanced for both, below- and above-barrier energies. The charged nature of the halo could thus have an effect on the fusion mechanism. Within this context, in the present work the fusion cross sections for several proton rich systems are compared to each other. Three of these systems correspond to the same target,58Ni (with projectiles of3He,7Be, and8B), but data for17F +208Pb also are included. All these projectiles lie near the proton drip line. An appropriate scaling of the data is made to do the comparison and the results are discussed.