Coulomb and nuclear interactions in the dynamics of weakly-bound neutron-halo breakup on heavy target  

作　　者：B.Mukeru Lauro Tomio 

机构地区：[1]Department of Physics,University of South Africa,P.O.Box 392,Pretoria 0003,South Africa [2]Instituto de Física Téorica,Universidade Estadual Paulista,01140-070 São Paulo,SP,Brazil

出　　处：《Chinese Physics C》2022年第1期157-166,共10页中国物理C（英文版）

基　　金：LT acknowledge support from Conselho Nacional de Desenvolvimento Científico e Tecnológico[Procs.304469-2019-0 and 464898/2014-5(INCT-FNA)];Fundação de AmparoàPesquisa do Estado de São Paulo[Projs.2017/05660-0]。

摘　　要：Within our aim to clarify some aspects of the breakup dynamics of loosely-bound neutron-halo projectiles on a heavy target,we apply the continuum discretized coupled-channel formalism to investigate the beryllium^(11)Be breakup on a lead^(208)Pb target atE_(lab)=140 MeV incident energy.By evidencing that the continuum–continuum couplings are much stronger in the nuclear breakup than in the Coulomb breakup,we conclude that the strength of these couplings in the total breakup is dominated by the nuclear contribution,with the diagonal monopole nuclear potential in the projectile–target center-of-mass having negligible effect on the total and nuclear breakup cross-sections.For this kind of reaction,we show that the condition for the total breakup to approach its dominant component in the absorption region is strongly dependent on the continuum–continuum couplings and the diagonal monopole nuclear potential.

关 键 词：Coulomb breakup nuclear breakup total breakup elastic scattering channel 

分 类 号：O571[理学—粒子物理与原子核物理]