The main purpose of the present work is to discuss whether or not the collective flows in heavy-ion collision at the Fermi energy can be taken as a tool to investigate the cluster configuration in light nuclei. In pra...The main purpose of the present work is to discuss whether or not the collective flows in heavy-ion collision at the Fermi energy can be taken as a tool to investigate the cluster configuration in light nuclei. In practice, within an extended quantum molecular dynamics model, four a-clustering （linear chain, kite, square and tetrahedron） configurations of 16O are employed in the initialization, 16O＋16O around the Fermi energy （40-60 MeV/nucleon） with impact parameter 1-3fro are simulated, and the directed and elliptic flows are analyzed. It is found that collective flows are influenced by the different a-clustering configurations, and the directed flow of free protons is more sensitive to the initial cluster configuration than the elliptic flow. Nuclear reaction at the Fermi energy can be taken as a useful way to study cluster configuration in light nuclei.展开更多
The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials ar...The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials are assumed to be energy-dependent. The gross resonant structures observed in the ^20Ne(^16O,^16O)^20 Ne excitation function are well described by the present DWBA calculations. Although the elastic and elastic-transfer analyses introduce a qualitative description of the experimental data, the coherent sum of the two reaction processes exhibit a much better result for both forward and large-angle data.展开更多
Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in...Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11421505,11220101005,11305239 and 11605270the Major State Basic Research Development Program of China under Grant No 2014CB845401+1 种基金the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences under Grant No QYZDJ-SSW-SLH002the China Postdoctoral Science Foundation under Grant No 2016M591730
文摘The main purpose of the present work is to discuss whether or not the collective flows in heavy-ion collision at the Fermi energy can be taken as a tool to investigate the cluster configuration in light nuclei. In practice, within an extended quantum molecular dynamics model, four a-clustering （linear chain, kite, square and tetrahedron） configurations of 16O are employed in the initialization, 16O＋16O around the Fermi energy （40-60 MeV/nucleon） with impact parameter 1-3fro are simulated, and the directed and elliptic flows are analyzed. It is found that collective flows are influenced by the different a-clustering configurations, and the directed flow of free protons is more sensitive to the initial cluster configuration than the elliptic flow. Nuclear reaction at the Fermi energy can be taken as a useful way to study cluster configuration in light nuclei.
文摘The excitation function and angular distributions for the ^16O+^20Ne system have been explained using the distorted wave Born approximation (DWBA) calculations. The real and imaginary Woods Saxon optical potentials are assumed to be energy-dependent. The gross resonant structures observed in the ^20Ne(^16O,^16O)^20 Ne excitation function are well described by the present DWBA calculations. Although the elastic and elastic-transfer analyses introduce a qualitative description of the experimental data, the coherent sum of the two reaction processes exhibit a much better result for both forward and large-angle data.
文摘Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.
