【摘 要】
：
在入射能量Ｅ为４０和１００ＭｅＶ／ｕ时，对~(１１２)Ｓｎ＋~(１１２)Ｓｎ和~(１２４)Ｓｎ＋~(１２４)Ｓｎ两个反应系统在不同碰撞参数下进行了同位旋相关的量子分子动力学模型计算，系统研究了阻塞率、线性动量转移、荷电粒子多重性、轻荷电粒子多
【机 构】
：
兰州重离子加速器国家实验室原子核理论研究中心!兰州730000中国科学院近代物理研究所兰州730000中国高等科学技术中心北京100080,兰州重离子加速器国家实验室原子核理论研究中心!兰州73000
论文部分内容阅读
在入射能量Ｅ为４０和１００ＭｅＶ／ｕ时，对~(１１２)Ｓｎ＋~(１１２)Ｓｎ和~(１２４)Ｓｎ＋~(１２４)Ｓｎ两个反应系统在不同碰撞参数下进行了同位旋相关的量子分子动力学模型计算，系统研究了阻塞率、线性动量转移、荷电粒子多重性、轻荷电粒子多重性、中子多重性以及束缚核总电荷Ｚ_(ｂｏｕｎｄ)随碰撞参数的变化规律，结果表明，中子多重性对碰撞参数的依赖在两个能量下都存在着明显的同位旋效应，Ｚ_(ｂｏｕｎｄ)在Ｅ为４０ＭｅＶ／ｕ时存在着同位旋效应．同时讨论了在较低和较高能量时如何更合理地确定反应事件的碰撞参数．
At incident energies E of 40 and 100 MeV / u, isovanothermic quantum states of ~ (112) Sn + ~ (112) Sn and ~ (124) Sn + ~ (124) Sn under different collision parameters Molecular dynamics model was used to calculate the change rule of obstruction rate, linear momentum transfer, charged particle multiplicity, light charged particle multiplicity, neutron multiplicity and bound nucleus charge along with impact parameters. Results It is shown that the dependency of neutron multiplicity on collision parameters has obvious isospin effect under both energies, and the z bound exists isospin effect when E is 40 MeV / u. The collision parameters for how to determine reaction events more reasonably at lower and higher energies are also discussed.
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