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Examining the effect of a binding-energy-dependent clusterization algorithm on isospin-sensitive observables in heavy-ion collisions
Kumar, S; Ma, YG
2015
Source PublicationPHYSICAL REVIEW C
Volume91Issue:3Pages:
Subtype期刊文献
AbstractThe phase space obtained using the isospin quantum molecular dynamical (IQMD) model is analyzed by applying the binding energy cut in the most commonly and widely used secondary cluster recognition algorithm. In addition, for the present study, the energy contribution from momentum-dependent and symmetry potentials is also included during the calculation of total binding energy, which was absent in clusterization algorithms used earlier. The stability of fragments and isospin effects are explored by using the new clusterization algorithm. The findings are summarized as follows: (1) The clusterization algorithm identifies the fragments at quite early time. (2) It is more sensitive for free nucleons and light charged particles compared to intermediate mass fragments, which results in the enhanced (reduced) production of free nucleons (light charged particles, or LCPs). (3) It has affected the yield of isospin-sensitive observables-neutrons (n), protons (p), H-3, He-3, and the single ratio [R(n/p)]-to a greater extent in the mid-rapidity and low kinetic energy region. In conclusion, the inclusion of the binding energy cut in the clusterization algorithm is found to play a crucial role in the study of isospin physics. This study will give another direction for the determination of symmetry energy in heavy-ion collisions at intermediate energies.
KeywordQuantum Molecular-dynamics Symmetry Energy Fragmentation Multifragmentation Physics
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24458
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Kumar, S,Ma, YG. Examining the effect of a binding-energy-dependent clusterization algorithm on isospin-sensitive observables in heavy-ion collisions[J]. PHYSICAL REVIEW C,2015,91(3):—.
APA Kumar, S,&Ma, YG.(2015).Examining the effect of a binding-energy-dependent clusterization algorithm on isospin-sensitive observables in heavy-ion collisions.PHYSICAL REVIEW C,91(3),—.
MLA Kumar, S,et al."Examining the effect of a binding-energy-dependent clusterization algorithm on isospin-sensitive observables in heavy-ion collisions".PHYSICAL REVIEW C 91.3(2015):—.
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