典型文献
Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn+Sn collisions at 270 MeV/nucleon
文献摘要：
Within a transport model,we investigated the effects of the momentum dependence of the nuclear symmetry potential on the pion observables in central Sn+Sn collisions at 270 MeV/nucleon.To this end,the quantity Usym∞(ρ0)(i.e.,the value of the nuclear symmetry potential at the saturation density ρ0 and infinitely large nucleon momentum)was used to characterize the momentum dependence of the nuclear symmetry potential.With a certain L(i.e.,the slope of the nuclear symmetry energy at ρ0),the characteristic parameter Usym∞(ρ0)of the symmetry potential significantly affects the production of π-andπ+and their pion ratios.Moreover,by comparing the charged pion yields,pion ratios,and spectral pion ratios of the theoreti-cal simulations for the reactions 108Sn+112Sn and 132Sn+124Sn with the corresponding data in the SπRIT experiments,we found that our results favor a constraint on Usym∞(ρ0)(i.e.,-160-9+18 MeV),and L is also suggested within a range of 62.7 MeV＜L＜93.1 MeV.In addition,the pion observable for 197Au+197Au collisions at 400 MeV/nucleon also supports the extracted value for Usym∞(ρ0).
文献关键词：
中图分类号：
作者姓名：
Gao-Feng Wei;Xin Huang;Qi-Jun Zhi;Ai-Jun Dong;Chang-Gen Peng;Zheng-Wen Long
作者机构：
School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550025,China;Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing,Guizhou Normal University,Guiyang 550025,China;Guizhou Provincial Key Laboratory of Public Big Data,Guizhou University,Guiyang 550025,China;College of Physics,Guizhou University,Guiyang 550025,China
文献出处：
引用格式：
[1]Gao-Feng Wei;Xin Huang;Qi-Jun Zhi;Ai-Jun Dong;Chang-Gen Peng;Zheng-Wen Long-.Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn+Sn collisions at 270 MeV/nucleon)[J].核技术（英文版）,2022(12):147-158
A类：
Sn+Sn,Usym,108Sn+112Sn,132Sn+124Sn,9+18,197Au+197Au
B类：
Effects,momentum,dependence,nuclear,symmetry,potential,pion,observables,collisions,MeV,nucleon,Within,transport,model,we,investigated,effects,central,To,this,quantity,value,saturation,density,infinitely,large,was,used,characterize,certain,slope,energy,characteristic,parameter,significantly,affects,production,+and,their,ratios,Moreover,by,comparing,charged,yields,spectral,theoreti,cal,simulations,reactions,corresponding,data,RIT,experiments,found,that,our,results,favor,constraint,also,suggested,within,range,In,addition,supports,extracted
AB值：
0.406585
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