We have studied the fragment yields emitted from the fragmentation of excited projectile nuclei in peripheral collisions of ${}^{136}Xe+Pb$ at 1 GeV/nucleon, and measured with the high-resolution magnetic spectrometer, the Fragment Separator (FRS) of GSI. The mass, charge and isotope distributions of nuclear fragments formed in the reactions were calculated within a statistical ensemble approach and compared to the experimental data. The ensemble of excited projectilelike source nuclei were created in the framework of a previous analysis of similar reactions performed at 600 MeV/nucleon (ALADIN-experiments, GSI). In addition, the ensemble of the low-excited compound nuclei is involved in the analysis. The overall agreement between theory and experiment was very satisfactory in reproducing the experimental data of isotope yields measured in the heavy-ion collisions. It is confirmed that a broad range of elements can be reproduced within a universal statistical disintegration of the excited projectile residues.

我们研究了在外围碰撞中激发的弹丸核碎裂所发出的碎片产率 ${}^{136}X\mathrm{电子}+磷乙$在 1 GeV/核子下，并使用高分辨率磁谱仪 GSI 的碎片分离器 (FRS) 进行测量。反应中形成的核碎片的质量、电荷和同位素分布在统计集成方法中计算，并与实验数据进行比较。在先前对以 600 MeV/核子进行的类似反应的分析（ALADIN-experiments，GSI）的框架中创建了激发的射弹状源核的集合。此外，低激发复合核的集合也参与了分析。在再现重离子碰撞中测得的同位素产率的实验数据方面，理论与实验的总体一致性非常令人满意。