1. Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of $^{29-33}\mathrm{Si}$ on carbon at $\sim$230~MeV/nucleon
- Author
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Li, Guang-Shuai, Su, Jun, Terashima, Satoru, Zhao, Jian-Wei, Xiao, Er-Xi, Zhang, Ji-Chao, He, Liu-Chun, Guo, Ge, Lin, Wei-Ping, Lin, Wen-Jian, Liu, Chuan-Ye, Lu, Chen-Gui, Mei, Bo, Pang, Dan-Yang, Sun, Ye-Lei, Sun, Zhi-Yu, Wang, Meng, Wang, Feng, Wang, Jing, Wang, Shi-Tao, Wei, Xiu-Lin, Xu, Xiao-Dong, Xu, Jun-Yao, Zhu, Li-Hua, Zheng, Yong, Zhang, Mei-Xue, and Zhang, Xue-Heng
- Subjects
Nuclear Experiment - Abstract
We report on the first measurement of the elemental fragmentation cross sections (EFCSs) of $^{29-33}\mathrm{Si}$ on a carbon target at $\sim$230~MeV/nucleon. The experimental data covering charge changes of $\Delta Z$ = 1-4 are reproduced well by the isospin-dependent quantum molecular dynamics (IQMD) coupled with the evaporation GEMINI (IQMD+GEMINI) model. We further explore the mechanisms underlying the single-proton removal reaction in this model framework. We conclude that the cross sections from direct proton knockout exhibit a overall weak dependence on the mass number of $\mathrm{Si}$ projectiles. The proton evaporation induced after the projectile excitation significantly affects the cross sections for neutron-deficient $\mathrm{Si}$ isotopes, while neutron evaporation plays a crucial role in the reactions of neutron-rich $\mathrm{Si}$ isotopes. It is presented that the relative magnitude of one-proton and one-neutron separation energies is an essential factor that influences evaporation processes., Comment: 7 pages, 4 figures
- Published
- 2024
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