Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of 29−33Si on carbon at ∼230 MeV/nucleon

We report on the first measurement of the elemental fragmentation cross sections (EFCSs) of Si 29 − 33 on a carbon target at ∼230 MeV/nucleon. The experimental data covering charge changes of Δ 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 an overall weak dependence on the mass number of Si projectiles. The proton evaporation induced after the projectile excitation significantly affects the cross sections for neutron-deficient Si isotopes, while neutron evaporation plays a crucial role in the reactions of neutron-rich 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. Therefore, proton evaporation should be incorporated into the reaction model in addition to the direct proton knockout in analyses of Gade-Tostevin systematic for single-proton removal reactions.

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Publication Details

Journal
Physics Letters B
Published
2024-11-19
DOI
https://doi.org/10.1016/j.physletb.2024.139143
Citations
6
Primary Topic
Nuclear physics research studies
Type
article
Field-Weighted Citation Impact
3.96

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article

Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of 29−33Si on carbon at ∼230 MeV/nucleon

Chuan-Ye Liu, I. Tanihata, Y. L. Sun, Ge Guo et al.
6 citations
Physics Letters B
Nuclear physics research studies
3.96
article

Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of 29−33Si on carbon at ∼230 MeV/nucleon

Chuan-Ye Liu, I. Tanihata, Y. L. Sun, Ge Guo, Shitao Wang, Erxi Xiao, Xiu-Lin Wei, Meng Wang, Xueheng Zhang, Feng Wang, Xiao-Dong Xu, Jianwei Zhao, B. Mei, B. Sun, Jichao Zhang, Mei-Xue Zhang, Jun Su, Jun-Yao Xu, Jing Wang, Li-Hua Zhu, Guang-Shuai Li, Weiping Lin, Dan-Yang Pang, Zhiyu Sun, Chen-Gui Lu, Liuchun He, Yong Zheng, Satoru Terashima, Wen-Jian Lin
article en
6 citations

Abstract

We report on the first measurement of the elemental fragmentation cross sections (EFCSs) of Si 29 − 33 on a carbon target at ∼230 MeV/nucleon. The experimental data covering charge changes of Δ 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 an overall weak dependence on the mass number of Si projectiles. The proton evaporation induced after the projectile excitation significantly affects the cross sections for neutron-deficient Si isotopes, while neutron evaporation plays a crucial role in the reactions of neutron-rich 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. Therefore, proton evaporation should be incorporated into the reaction model in addition to the direct proton knockout in analyses of Gade-Tostevin systematic for single-proton removal reactions.

Physics Letters BVol. 859
Sun Yat-sen University (CN), GSI Helmholtz Centre for Heavy Ion Research (DE), Chinese Academy of Sciences (CN), Peking University (CN), Sichuan University (CN), Institute of Modern Physics (CN), State Key Laboratory of Nuclear Physics and Technology, Beihang University (CN), The University of Osaka (JP)
National Natural Science Foundation of China, Chinese Academy of Sciences
Openalex Percentile: Top 5%
Nuclear physics research studies
3.96
DOIOpen Access PDFOpenAlex
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