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Chinese Physics C> 2000, Vol. 24> Issue(5) : 426-430 

Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate 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 Institute of Modern Physics, South West JiaoTong University, Chengdu 610031,China

  • We have used the isospin dependent quantum molecular dynamics to investigate the probable observable for probing isospin dependent nucleon-nucleon cross section in multifragmentation process of intermediate energy heavy ion collisions. The calculation results show that the correlation between the intermediate mass fragment multiplicity Nimf and the total number of charged particles Nc is a sensitive observable for probing in medium isospin dependent nucleon-nucleon cross section in the chosen energy region. Because we apply the reversible reaction effect of heavy mass projectile on light mass target in the chosen energy region, which result in more intermediate mass products emitted towards forward angles, it is convenient to extract in medium isospin dependent nucleon-nucleon cross sections by combining theory simulations and experimental observations under the conditions of limited detectors.
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    [1] LI BaoAn,Ko CheMing, Baur W. Inter. Jour. Mod. Phys. E. 1998, 7(2):147-299[2] LI BaoAn, Ko CheMing, REV ZhongZhou. Phys. Rev. Lett.,1997, 78:1644[3] Hanold K A et al. Phys. Rev.,1995. 052:1462[4] Kunde G Jet al. Phys. Rev. Lett.,1996, 77:2897[5] LI BeoAn, RE:V ZhongZhou et a1. Phys. Rev. Lett.,1996,76:4492-4495[6] Pnk R, Ilenettson W.Bjark O et al. Phys. Rev. Lett.,1997, 78:1022-1025[7] Pak R, LI BaoArt, Beneaon W et al. Phys. Rev. Lett.,1997, 78:1026-1029[8] CHEN LieWen, ZHANG FengShow, JIN ('}enMing. Phys. Rev.,1998, 037:2451[9] CHEN LieWen, ZHANG FengShow, JIN GenMing. Phys. Rev.,1998, 038:2283[10] CHEN LieWen, GE LingXiao, ZHANG XiaoDong et al. J. Phys,1997, 623:211[11] LIU JianYe, GE YuCheng. YANG FuZhong. Z. Phys.,1993, A354:187[12] LIU JianYe, ZHANG ShaoGuattg. Z. Phys.,1994, A354:31[13] LIU Hang, LILT JianYe. Z. Phys.,1996. A354:311[14] Howman D R, Mader C M et al. Phys. Rev,1992, 046: 1834[15] LIU ]ianYe, CHEN Bo et al. Nuclear Physics Review(in Chinese), 1999, 16(3):165(刘建业，陈波等.原子核物理评论，1999,16(3):165)[16] Huang M Jet al. Phys. Rev. Lett.,199b, 77:3737

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ZHAO Qiang, CHEN Bo, LIU JianYe, ZHANG FengShou, WANG ShunJin, CHEN LieWen and ZUO Wei. Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions[J]. Chinese Physics C, 2000, 24(5): 426-430.
ZHAO Qiang, CHEN Bo, LIU JianYe, ZHANG FengShou, WANG ShunJin, CHEN LieWen and ZUO Wei. Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions[J]. Chinese Physics C, 2000, 24(5): 426-430. shu
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Received: 1999-03-24
Revised: 1900-01-01
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Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions

    Corresponding author: ZHAO Qiang,
  • 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 Institute of Modern Physics, South West JiaoTong University, Chengdu 610031,China
  • Received Date: 1999-03-24
  • Accepted Date: 1900-01-01
  • Available Online: 2000-04-05

Abstract: We have used the isospin dependent quantum molecular dynamics to investigate the probable observable for probing isospin dependent nucleon-nucleon cross section in multifragmentation process of intermediate energy heavy ion collisions. The calculation results show that the correlation between the intermediate mass fragment multiplicity Nimf and the total number of charged particles Nc is a sensitive observable for probing in medium isospin dependent nucleon-nucleon cross section in the chosen energy region. Because we apply the reversible reaction effect of heavy mass projectile on light mass target in the chosen energy region, which result in more intermediate mass products emitted towards forward angles, it is convenient to extract in medium isospin dependent nucleon-nucleon cross sections by combining theory simulations and experimental observations under the conditions of limited detectors.

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