21 de junho de 2018 | Estruturas Nucleares e Reações, Publicações
G. L. Zhang, G. X. Zhang, C. J. Lin, J. Lubian, J. Rangel, B. Paes, J. L. Ferreira, H. Q. Zhang, W. W. Qu, H. M. Jia, L. Yang, N. R. Ma, L. J. Sun, D. X. Wang, L. Zheng, X. X. Liu, X. T. Chu, J. C. Yang, J. S. Wang, S. W. Xu, P. Ma, J. B. Ma, S. L. Jin, Z. Bai, M. R. Huang, H. L. Zang, B. Yang, Y. Liu
PHYSICAL REVIEW C, v. 97, p. 044618, 2018
04/04/2018
Abstract
The elastic scattering angular distributions were measured for 50- and 59-MeV F17 radioactive ion beam on a Y89 target. The aim of this work is to study the effect of the breakup of the proton halo projectile on the elastic scattering angular distribution. The experimental data were analyzed by means of the optical model with the double-folding São Paulo potential for both real and imaginary parts. The theoretical calculations reproduced the experimental data reasonably well. It is shown that the method of the data analysis is correct. In order to clarify the difference observed at large angles for the 59-MeV incident energy data, Continuum-Discretized Coupled-Channels (CDCC) calculations were performed to consider the breakup coupling effect. It is found that the experimental data show the Coulomb rainbow peak and that the effect of the coupling to the continuum states is not very significant, producing only a small hindrance of the Coulomb rainbow peak and a very small enhancement of the elastic scattering angular distribution at backward angles, suggesting that the multipole response of the neutron halo projectiles is stronger than that of the proton halo systems.