Isospin Effect of Charged Particle Multiplicity in Intermediate Energy Heavy Ion Collisions

  • The dependence of He and intermediate mass fragments (IMF) production rates in the reactions 55MeV/u 40Ar+58,64Ni on the isospin, impact parameter and primary excitation energy of the reaction system was studied by using the 4:v charged particle multidetector array system ( MUDAL) . For the mentioned two reaction systems, the measured He particle contribution in the total charged particle multiplicity increases with increasing the total charged particle multiplicity but for the contribution of IMFs in the total charged particle multiplicity increases with increasing the total charged particle multiplicity at lower total charged particle multiplicities, and latter on it drops down with further increaseg of the total charged particle multiplicities. The experimental results of these two reaction systems with the same nuclear charge indicate that the contributions of He and IMFs in the total charged particle multiplicities are obviously isospin dependent.
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  • [1] Kim Y D et al. Phys. Rev. Lett., 1989,63:10882 Bowmann D R et al. Phys. Rev. Lett., 1991,67:1527 3 Bauger E et al. Phys. Rev. Lett., 1993,B302:37054 ZHAN W L, GUO Z Y, LIU G H et al. Science in China A,1999,42(5) :528 5 Kubo T et al. Nucl Instrum. Methods In Phys. Res., 1992,B70:3096 Geissel H et al. Nucl Instrum Methods In Phys. Res., 1992,B70:2867 Mueller A C, Anne R. Nucl Instrum Methods In Phys. Res., 1991, B56/57: 5598 Sherrill B M et al. Nucl Instrum Methods In Phys. Res., 1991,B56/57:11069 LI B A, KO C M, Bauer W. Inter Jour. Mod. Phys., 1988,E2:147 10 WU H Y, XIAO Z G, JIN G M et al. Physics Letters, 2002,B538:3911 XIAO Zhi–Gang, WU He–Yu, LI Zu–Yu et al. HEP NP,2001,26(6) :494(in Chinese)(肖志刚,吴和宇,李祖玉等.高能物理与核物理,2001,26(6) :494) 12 WU He–Yu, XIAO Zhi–Gang, LI Zu–Yu et al. HEP NP, 1999,23 (11) :1115 13 XIAO Zhi–Gang, WU He–Yu, WANG Hong–Wei et al. HEP NP,2001,25(7) :643(in Chinese)(肖志刚,吴和宇,王宏伟等.高能物理与核物理,2001,25(7) :643)14 XIAO Zhi–Gang, WU He–Yu, WANG Hong–Wei et al. HEP NP, 2001,25(11) : 1071(in Chinese)(肖志刚,吴和宇,王宏伟等.高能物理与核物理,2001,25(11) :1071) 15 LIU Jian–Ye, YANG Yan–Fang et al. Physical Review, 2001,C63:05461216 LIU Jian–Ye, GUO Wen–Jun, WANG Shun–Jin et al. Physics Review Letters, 2001,86(6) :97517 LIU Jian–Ye, CHEN Bo, ZHAO Qiang et al. Nucl. Phys. Rev., 1999,16(3) : 165( in Chinese)(刘建业,陈波,赵强等.原子核物理评论,1999,16(3) :165) 18 WANG Hong–Wei, DUAN Li–Min, XIAO Zhi–Gang et al. Nuclear Electronics Detection Technology, 2002,22 (3) : 204 (in Chinese)(王宏伟,段利敏,肖志刚等.核电子学与核探测技术,2002,22(3) :204)19 LI Song–Lin, ZHU Yong–Tai, JIANG Zhong–He et al. Nucl. Tech., 2000, 23(8) :584(in Chinese)(李松林,诸永泰,江中和等.核技术,2000,23(8) :584)
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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[J]. Chinese Physics C, 2003, 27(11): 990-994.
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[J]. Chinese Physics C, 2003, 27(11): 990-994. shu
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Received: 2003-04-08
Revised: 1900-01-01
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Isospin Effect of Charged Particle Multiplicity in Intermediate Energy Heavy Ion Collisions

    Corresponding author: HU Rong-Jiang,
  • Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Physics, The Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Abstract: The dependence of He and intermediate mass fragments (IMF) production rates in the reactions 55MeV/u 40Ar+58,64Ni on the isospin, impact parameter and primary excitation energy of the reaction system was studied by using the 4:v charged particle multidetector array system ( MUDAL) . For the mentioned two reaction systems, the measured He particle contribution in the total charged particle multiplicity increases with increasing the total charged particle multiplicity but for the contribution of IMFs in the total charged particle multiplicity increases with increasing the total charged particle multiplicity at lower total charged particle multiplicities, and latter on it drops down with further increaseg of the total charged particle multiplicities. The experimental results of these two reaction systems with the same nuclear charge indicate that the contributions of He and IMFs in the total charged particle multiplicities are obviously isospin dependent.

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