Evolution of reaction mechanisms in the light heavy-ion system.
Evolution of reaction mechanisms in the light heavy-ion system.
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轻重离子体系中反应机制的演变。
DOI：
10.1103/physrevc.45.2355
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Horiuchi
中科院分区：
文献类型：
--
作者：
Maruyama;Ohnishi;Horiuchi
应用量子分子动力学方法研究了轻重离子体系中反应机理及其相互间跃迁的细节。通过研究$^{16}\mathrm{O}$${+}^{16}$ O体系中碎片质量分布与入射能量的关系，讨论了反应机理演化的轮廓。计算得到的$^{14}\mathrm{N}$${+}^{12}$ C系中质量碎片的总截面与数据吻合。分析核子相对于其母团簇的动能随时间的变化，对阐明反应机理是非常有用的。计算得到的$^{16}\mathrm{O}$${+}^{12}$ C系统光碎片的双微分截面与实验结果吻合较好。发现团簇内部能的平均值随着入射能量的增加而趋于饱和。
The quantum molecular dynamics method is used to study the details of reaction mechanisms and transitions among them in light heavy-ion systems. The outline of evolution of reaction mechanism is discussed by studying the incident-energy dependence of the fragment mass distribution in the $^{16}\mathrm{O}$${+}^{16}$O system. The calculated total cross sections of medium-mass fragments in the $^{14}\mathrm{N}$${+}^{12}$C system agree with data. The analysis of time variation of kinetic energies of nucleons relative to their parent clusters is shown to be very useful to clarify the reaction mechanisms. The calculated double differential cross sections of light fragments in the $^{16}\mathrm{O}$${+}^{12}$C system show good agreement with experiments. The average of cluster internal energies is found to saturate with regard to the increase of incident energy.