Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

GUO Wen-Jun; LIU Jian-Ye; ZUO Wei; XING Yong-Zhong; LI Xi-Guo; LI Zeng-Hua

Chinese Physics C> 2002, Vol. 26> Issue(12) : 1264-1270

Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 730000,China3 Department of Physics,Tianshui Normal College,Gansu Tianshui 741000,China

Abstract
HTML
Reference
Related

PDF

Abstract：
Effects of the symmetry potential U^sym and the isospin dependence of in-medium nucleon-nucleon cross section N_n( N_p) on the number of neutron (proton) emitted as well as their dependence on the momentum dependent interaction (MDI) are studied within an isospin dependent Quantum Molecular Dynamics (IQMD) model. The isospin dependence nucleon-nucleon cross section is found to have a much stronger influence on the N_n( N_p) especially for the neutron-deficient collision system with MDI in the energy region from about 100 to 400MeV/nucleon. The calculation results are clear to show that the number of neutron (proton) emitted during reaction in the neutron-deficient system,depends sensitively on the isospin dependence of in-medium nucleon-nucleon cross section and weakly on the symmetry potential with MDI. In this case one can make use of the number of neutron (proton) emitted as a probe to extract simultaneously both the magnitude and the in-medium nucleon-nucleon cross section.

References

[1]

. LI B A ,Ko C M et al.Inter.Jour.Mod.Phys.,1998,E7(2):147 2. LI B A ,Schroder W U .Isospin Physicsin Heavy ion Collision at Intermediate Energies,New York:Nova Science Publishers.Inc.,2001 3. LIU Jian-Ye,GUO Wen-Jun,WANG Shun-Jin et al.Phys.Rev.Lett.,2001,86:975 4. LIU Jian-Ye,GUO Wen-Jun,XING Yong-Zhong et al.Phys.Rev.C .,(to be submit)5. LIU Jian-Ye,CHEN Bo,ZHAO Qiang et al.Nuclear Physics Review,1999,16(3):165(in Chinese)(刘建业,陈波,赵强.原子核物理评论,1999,16(3):165) 6. LI B A .Phys.Rev.Lett.,2000,85:4221 7. LIU Jian-Ye,YANG Yan-Fang,ZUO Wei et al.Phys.Rev.,2001,C63:0546123 8. LIU Jian-Ye,ZHAO Qiang,WANG Shun-Jin et al.Nucl.Phys.,2001,A687:4759. Aichelin J,Peilert G ,Bohnet A et al.Phys.Rev.,1988,C37:2451 10. Peilert G ,Stocher H ,Greiner W .Phys.Rev.,1989,C39:1402 11. LIU Hang,LIU Jian-Ye.Z .Phys.,1996,A345:31112. Dorso C ,Duarte S,Randrup J.Phys.Lett.,1987,B188:28713. Aichelin J,Rosenhauer A ,Peilert G et al.Phys.Rev.Lett.,1987,58:1926 14. Reinhard P G .In:Computational Nuclear Physics1,edited by Langanke K ,Maruhn J A .Koonin S E .Germany:Springer Verlag,1991,28—50 15. Klakow D ,Welke G ,Bauer W .Phys.Rev.,1993,C48:1982 16. HUANG M J et al.Phys.Rev.Lett.,1996,77:3739 17. Westfall G D et al.Phys.Rev.Lett.,1993,71:1986 18. Alkahzov G et al.Nucl.Phys.,1977,A280:365 19. CHEN L W ,GE L X ,ZHANG F S .High Energy Phys.and Nucl.Phys.,1997,21:1018(in Chinese)(陈列文,葛凌霄,张丰收.高能物理与核物理,1997,21:1018)

[1]	LIU Jian-Ye , GUO Wen-Jun , Xing Yong-Zhong , LI Xi-Guo . Isospin Effect of Momentum Dependent Interaction in Heavy Ion Collisions. Chinese Physics C, 2005, 29(5): 456-460.
[2]	XING Yong-Zhong , LIU Jian-Ye , GUO Wen-Jun . Liquid-Gas Phase Transition and Isospin Fractionation in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2004, 28(6): 607-610.
[3]	XING Yong-Zhong , LIU Jian-Ye , GUO Wen-Jun . Isospin Effects in the Isospin Fractionation Process in Intermediate Energy HeavyIon Collisions. Chinese Physics C, 2004, 28(4): 403-407.
[4]	LI Zhu-Xia , ZHANG Ying-Xun , LI Qing-Feng , ZHAO Kai , WU Xi-Zhen . Isospin Effect in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2004, 28(12): 1343-1348.
[5]	GUO Wen-Jun , LIU Jian-Ye , XING Yong-Zhong , ZUO Wei , LI Xi-Guo . Isospin Fractionation Process in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2003, 27(10): 897-900.
[6]	HU Rong-Jiang , WU He-Yu , JIN Gen-Ming , ZHU Yong-Tai , LI Song-Lin , XIAO Zhi-Gang , WANG Hong-Wei , DUAN Li-Min , LI Zu-Yu , YIN Xu , WANG Su-Fang , ZHANG Bao-Guo , WEI Zhi-Yo , , , . Isospin Effect of Charged Particle Multiplicity in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2003, 27(11): 990-994.
[7]	XING Yong-Zhong , LIU Jian-Ye , GUO Wen-Jun , ZUO Wei , LI Xi-Guo . Role of Momentum Dependent Interaction on the Isospin Effects of Fragmentations and Dissipations at Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2002, 26(S1): 63-72.
[8]	YANG Yan-Fang , LIU Jian-Ye , ZUO Wei , GUO Wen-Jun , ZHAO Qiang . Entrance Channel Dependence of the Isospin Effects of the Nuclear Stopping in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2001, 25(8): 765-771.
[9]	ZHAO Qiang , GUO Wen-Jun , LIU Jian-Ye , ZUO Wei , WANG Shun-Jin . Isospin Dependence of Preequilibrium Nucleon Emission in Intermediate Energy Heavy Ion Collision. Chinese Physics C, 2001, 25(3): 244-250.
[10]	ZHAO Qiang , CHEN Bo , LIU JianYe , ZHANG FengShou , WANG ShunJin , CHEN LieWen , ZUO Wei . Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions. Chinese Physics C, 2000, 24(5): 426-430.
[11]	CHEN Bo , ZHAO Qiang , LIU JianYe , ZHANG FengShou , WANG ShunJin , CHEN LieWen , ZUO Wei . A Sensitive Probe for Isospin-Dependent Nucleon-Nucleon Cross Section in Intermediate Energy Heavy Ion Collision. Chinese Physics C, 2000, 24(4): 326-330.
[12]	FANG DeQing , SHEN WenQing , FENG Jun , CAI XiangZhou , SU QianMin , MA YuGang . Isospin Effect of Fragmentation Reaction and Its Disappearance in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2000, 24(10): 949-954.
[13]	ZHAO Qiang , LIU JianYe , ZHANG FengShou , WANG ShunJin , ZUO Wei , CHEN LieWen . Isospin Effect in Multifragmentation Process of Heavy Ion Collisions at Intermediate Energy. Chinese Physics C, 2000, 24(11): 1024-1029.
[14]	Chen Liewen , Zhang Fengshou , Jin Genming . Isospin Effects on Balance Energy in HIC at Intermediate Energies. Chinese Physics C, 1999, 23(5): 469-474.
[15]	Chen Liewen , Zhang Fengshou , Zeng Xianghua , Jin Genming . Isospin Effects on Collective Flow in HIC at Intermediate Energies. Chinese Physics C, 1998, 22(11): 1035-1041.
[16]	Chen Liewen , Zhang Xiaodong , Ge Lingxiao . Isospin Effects on Pre-equilibrium NucleonEmission in Heavy Ion Collisions. Chinese Physics C, 1996, 20(12): 1091-1096.
[17]	Zhu Quanling , Ge Lingxiao , Zhang Xiaodong . Isospin Effects on Dynamics of Heavy Ion Collisions. Chinese Physics C, 1994, 18(9): 853-857.
[18]	LIU Jian-Ye , LI Jun-Qing , QIAO Wei-Min , CHEN Pei-Jun , SHEN Wen-Qing , TAN Nan-Hong . THE SHELL EFFECTS IN HEAVY ION COLLISIONS FOR LOW BOBARDMENT ENERGIES. Chinese Physics C, 1988, 12(6): 840-847.
[19]	WU Guo-Hua , GE Ling-Xiao . EMISSION OF LIGHT PARTICLES IN HEAVY ION COLLISIONS. Chinese Physics C, 1988, 12(4): 541-547.
[20]	GE Ling-Xiao , LIU Jian-Ye , WANG Shun-Jin . TWO-BODY EFFECT IN HEAVY ION COLLISION. Chinese Physics C, 1987, 11(5): 695-698.

Access

Get Citation

GUO Wen-Jun, LIU Jian-Ye, ZUO Wei, XING Yong-Zhong, LI Xi-Guo and LI Zeng-Hua. Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions[J]. Chinese Physics C, 2002, 26(12): 1264-1270.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2001-12-13
Revised: 1900-01-01

Article Metric

Article Views(3169)
PDF Downloads(697)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

Corresponding author: GUO Wen-Jun,

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,The Chinese Academy of Sciences, Lanzhou 730000,China3 Department of Physics,Tianshui Normal College,Gansu Tianshui 741000,China

Received Date: 2001-12-13

Accepted Date: 1900-01-01

Available Online: 2002-12-05

Abstract: Effects of the symmetry potential U^sym and the isospin dependence of in-medium nucleon-nucleon cross section N_n( N_p) on the number of neutron (proton) emitted as well as their dependence on the momentum dependent interaction (MDI) are studied within an isospin dependent Quantum Molecular Dynamics (IQMD) model. The isospin dependence nucleon-nucleon cross section is found to have a much stronger influence on the N_n( N_p) especially for the neutron-deficient collision system with MDI in the energy region from about 100 to 400MeV/nucleon. The calculation results are clear to show that the number of neutron (proton) emitted during reaction in the neutron-deficient system,depends sensitively on the isospin dependence of in-medium nucleon-nucleon cross section and weakly on the symmetry potential with MDI. In this case one can make use of the number of neutron (proton) emitted as a probe to extract simultaneously both the magnitude and the in-medium nucleon-nucleon cross section.

HTML

Reference (1)

Isospin Effect of Neutron (Proton) Emission Number in Intermediate Energy Heavy Ion Collisions

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article