The effect of symmetry potential on the balance energy of light particles emitted from mass symmetric heavy-ion collisions with isotopes,isobars and isotones

• Published in: Science China. Physics, mechanics & astronomy Vol. 55; no. 12; pp. 2407 - 2413
• Main Authors: Wang, YongJia, Guo, ChenChen, Li, QingFeng, Zhang, HongFei
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science China Press 01.12.2012; Springer Nature B.V
• Subjects: Astronomy; Classical and Continuum Physics; Deuterons; Heavy ions; Ionic collisions; Isotopes; Molecular dynamics; Neutrons; Nuclear isobars; Observations and Techniques; Particle physics; Physics; Physics and Astronomy; Potential energy; Protons; Symmetry; Tritons; 中子能量; 同位素; 对称势; 相对论量子分子动力学模型; 等压线; 粒子; 能量平衡; 重离子碰撞; balance energy; symmetry energy; directed flow
• ISSN: 1674-7348; 1869-1927; 1869-1927
• DOI: 10.1007/s11433-012-4922-3

Using the Ultrarelativistic Quantum Molecular Dynamics（UrQMD） model,the balance energies of free neutrons,free protons and Z=1 particles（including free protons,deuterons and tritons） from mass symmetric heavy-ion collisions with isotopes,isobars and isotones are studied.The influence of nuclear symmetry potential energy on the balance energy is emphasized.It is found that the balance energy of free neutrons is sensitive to the nuclear symmetry energy,while that of free protons is not.Particularly,the initial neutron/proton ratio dependence of the balance energy of free neutrons from Sn isotopes can be taken as a useful probe to constrain the stiffness of the nuclear symmetry energy.