Isospin Effects on Collective Flow in HIC at Intermediate Energies

Chen Liewen; Zhang Fengshou; Zeng Xianghua; Jin Genming

Chinese Physics C> 1998, Vol. 22> Issue(11) : 1035-1041

Isospin Effects on Collective Flow in HIC at Intermediate Energies

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
Based on an isospin-dependent quantum molecular dynanics model, the neutron and proton density calculated from Skyrme-Hartree-Fock theory, along with the neutron and proton Fermi momenta calculated from Fermi gas model, are used to sample stable initial nuclei, ⁵⁸Fe and ⁵⁸Ni. The isospin effects on collective flow in reaction systems 55MeV/u ⁵⁸Fe+⁵⁸Fe and 55MeV/u ⁵⁸Ni+⁵⁸Ni are studied in detail.At different impact parameters for different types of fragments, it is shown that the neutron-rich system ⁵⁸Fe+⁵⁸Fe has stronger collective flow than the system ⁵⁸Ni+⁵⁸Ni,which could qualitatively agree with the results of the experiments. Meanwhile, the effects of both isospin-dependent symmetry energy and nucleon-nucleon cross sections on collective flow are studied.

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[1]

Bertulani C A et al.Phys.Rep., 1993, 226(6):281—376 [2] Zhukov M V et al. Phys. Rep.,1993, 231: 151–199 [3] Tanihata I.Prog.Part. Nucl. Phys.,1995,35:505[4] Li B A,Ko C M, Bauer W. Preprint MSUCL–1078(1997) [5] Chen Liewen, Zhang Xiaodong,Ge Lingxiao. High Energy Phys.and Nucl.Phys. (in Chinese),1996,20(12):1091—1096(陈列文,张晓东,葛凌霄.高能物理与核物理,1996,20(12):1091—1096) [6] Kunde G J et al. Phys. Rev.Lett,1996, 77(14):2897—2900[7] Li B A. Ko C M, Ren Z Z. Phys. Rev. Lett, 1997, 78(9): 1644—1647[8] Li B A,Yennello S J.Phys.Rev., 1995, C52(4):R1746—R1749[9] Chen L W et al.J.Phys., 1997, G23:211—218 [10] Li B A et al. Phys. Rev. Lett., 1996, 76(24):4492—4495[11] Pak R et al. Phys. Rev. Lett., 1997, 78(6):1022—1025[12] Pak R et al. Phys. Rev. Lett, 1997,78(6):1026—1029 [13] Danielewicz P, Odyniec G. Phys. Lett, 1985, 8157(2,3):146—150[14] Xu H M. Phys. Rev.Lett, 1991, 67(20):2769—2772[15] Zhou H B et al. Nucl. Phys., 1994, A580;627—642[16] Hartnack C, Li Z X. Nucl. Phys., 1989, A495(3,4):303c—320c [17] Zhu Quanling,Ge Lingxiao,Li Zhuxia High Energy Phys. and Nucl. phys. (in Chinese),1992,16(7): 658—665 (朱全伶,葛凌霄,李祝霞.高能物理与核物理,1992,16(7):658—665) [18] Aichelin J. Phys. Rep., 1991, 2045,(6):233—360 [19] Chen Liewen, Zhang Fengshou, Zeng Xianghua. High Energy Phys. and Nucl. Phys.(in Chinese),1998, 22(6):538—544 (陈列文,张丰收,曾祥华.高能物理与核物理,1998,22(6):538— 544) [20] Wen Wanxing, Jin Genming, Zhong Jiquan. High Energy Phys. and dNucl. Phys. (in Chinese) 1996,20(2):148—152(文万信,靳根明,钟纪泉.高能物理与核物理,1996,20(2):148—152) [21] Reinhard P G. In:Computational Nuclear Physics L., Germany: Springer–Verlag, 1991. 28—50[22] Zhang F S, Suraud E. Phys.Rev., 1995, C51(6):3201—3210 [23] Bowman D R et al. Phys. Rev. Lett., 1991, 67(12):1527—1530 [24] Hubele J et al. Z. Phys., 1991, A340(3):263—270[25] Peter J.In: Symp. on Heavy Ion Phys. and Its Appli., Lanzhou, China 8—12 Oct, Singapore:World Scientific, 1990. 191—201

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Chen Liewen, Zhang Fengshou, Zeng Xianghua and Jin Genming. Isospin Effects on Collective Flow in HIC at Intermediate Energies[J]. Chinese Physics C, 1998, 22(11): 1035-1041.

Chen Liewen, Zhang Fengshou, Zeng Xianghua and Jin Genming. Isospin Effects on Collective Flow in HIC at Intermediate Energies[J]. Chinese Physics C, 1998, 22(11): 1035-1041. shu

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Received: 1997-11-18
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Isospin Effects on Collective Flow in HIC at Intermediate Energies

Corresponding author: Chen Liewen,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date: 1997-11-18

Accepted Date: 1900-01-01

Available Online: 1998-11-05

Abstract: Based on an isospin-dependent quantum molecular dynanics model, the neutron and proton density calculated from Skyrme-Hartree-Fock theory, along with the neutron and proton Fermi momenta calculated from Fermi gas model, are used to sample stable initial nuclei, ⁵⁸Fe and ⁵⁸Ni. The isospin effects on collective flow in reaction systems 55MeV/u ⁵⁸Fe+⁵⁸Fe and 55MeV/u ⁵⁸Ni+⁵⁸Ni are studied in detail.At different impact parameters for different types of fragments, it is shown that the neutron-rich system ⁵⁸Fe+⁵⁸Fe has stronger collective flow than the system ⁵⁸Ni+⁵⁸Ni,which could qualitatively agree with the results of the experiments. Meanwhile, the effects of both isospin-dependent symmetry energy and nucleon-nucleon cross sections on collective flow are studied.

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Isospin Effects on Collective Flow in HIC at Intermediate Energies

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