CDCC calculations of elastic scattering for the systems 6Li+144Sm and 6Li+208Pb. Effect of resonances of 6Li on elastic scattering angular distributions

37th Symposium on Nuclear Physics

Camacho, A. Gómez^1

Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, México, D.F.

C.P. 11801, Mexico^1

关键词: Continuum state;    Coupled channel methods;    Global interaction;    Nonresonant;    Resonant state;    Sub-systems;    Three-body systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/578/1/012003/pdf
DOI  :  10.1088/1742-6596/578/1/012003

来源: IOP

【 摘 要 】

Calculations of elastic scattering angular distributions for reactions of the weakly bound projectile6Li with targets144Sm and208Pb at energies above the barrier, are performed with the Continuum Discretized Coupled-Channel method (CDCC). Ground, resonant and nonresonant continuum states of6Li are included up to some maximum energy Εmaxfor which convergence is achieved. In the three-body system, global interactions are used for the α-target and d - target sub-systems. The effect of continuum resonant states of6Li, i.e., l 2, jπ3+, 2+ and 1+ on elastic scattering angular distributions is investigated by extracting these states from the continuum space. It is found that the calculated elastic scattering angular distributions are in good agreement with the measurements for most of the cases studied where consideration of couplings to continuum states is essential. It is also found that the resonance character of the continuum states is in some cases important to obtain agreement with the data.