论文标题
$^{58,64} $ ni+$^{58,64} $ ni Systems的Indra-Fazia设备的首次结果
First results from the INDRA-FAZIA apparatus on isospin diffusion in $^{58,64}$Ni+$^{58,64}$Ni systems at Fermi energies
论文作者
论文摘要
对反应中的Isospin平衡过程的调查$^{58,64} $ ni+$^{58,64} $ ni在Fermi政权中的两个轰炸能量（$ 32 \，$ MEV/nucleon and nucleon and $ 52 \，$ 52 \，$ MEV/NOCLEON）。在Ganil耦合的Indra-Fazia设备的第一次实验活动中，已经获得了数据。从外围到半段落碰撞的选择，quasiprojectile残基的中子含量和来自quasiprojectile蒸发的光弹出物的中子含量都被用作对弹丸和靶标之间的同胞素扩散过程的动力学过程的探针。 Isospin运输比率已采用。清楚地证明了初始同胞不平衡随着中心性的增加而放松。对于$ 32 \ $ MEV/核的反应，ISOSPIN平衡似乎更强，因为弹丸 - 靶标相互作用时间较长，而$ 52 \，$ MEV/nucleon。等素平衡的相干指示来自准注射式残基特性和归因于准注射剂衰减的颗粒。
An investigation of the isospin equilibration process in the reactions $^{58,64}$Ni+$^{58,64}$Ni at two bombarding energies in the Fermi regime ($32\,$MeV/nucleon and $52\,$MeV/nucleon) is presented. Data have been acquired during the first experimental campaign of the coupled INDRA-FAZIA apparatus in GANIL. Selecting from peripheral to semi-central collisions, both the neutron content of the quasiprojectile residue and that of the light ejectiles coming from the quasiprojectile evaporation have been used as probes of the dynamical process of isospin diffusion between projectile and target for the asymmetric systems. The isospin transport ratio technique has been employed. The relaxation of the initial isospin imbalance with increasing centrality has been clearly evidenced. The isospin equilibration appears stronger for the reactions at $32\,$MeV/nucleon, as expected due to the longer projectile-target interaction time than at $52\,$MeV/nucleon. Coherent indications of isospin equilibration come from the quasiprojectile residue characteristics and from particles ascribed to the quasiprojectile decay.
