Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy

Zhang Xiaodong; Ge Lingxiao

Chinese Physics C> 1995, Vol. 19> Issue(10) : 945-951

Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy

Zhang Xiaodong ^, ,
Ge Lingxiao

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

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Abstract：
Based on the quantum molecular dynamics model, the time and energy evolutions of intermediate mass fragments (IMF)and its dynamical origin are systematically studied for ⁴⁰Ca+⁴⁰Ca central collision.The transition of reaction mechanism, the relation between the density fluctuation and IMF and the time scale of IMF emission are discussed in detail.The relative density fluctuation attains to maximum at energy region of 50-80MeV/u corresponding to an obvious increase of IMF. The possible occurrence of total disassembly at incident energy of about 65MeV/u for the studied reactions is predicted.Meanwhile, a saturation value (140fm/c) for time scale of multifragmentation is obtained.

References

[1]

J.Aichelin,Phys.Rep.,202（1991）233.[2] 朱全伶、葛凌霄、李祝霞，高能物理与核物理，16（1992）658.[3] 朱全伶、葛凌霄、张晓东，高能物理与核物理，18（1994）850.[4] U.Lynn,P.Kreutz,J.C.Adloff et al.,Nucl.Phys.,A545（1992）329c.[5] A.Milkau et al,GSI Preprint,GSI 91008,1991.[6] M.B.Tsang,Proceeding of the XXXII Int.Winter Meetingson Nucl.Phys.,ed by IORI（Ricerca Scientificed Educazion Permanente）1994,p512.[7] Ge Lingxiao,Zeng Xianhua,Zuo wei,Phys.Rev.,C50（1994）2129.[8] E.Bauge,A.Elmani,A.Lacey et al.,Phys.Rev.Lett.,70（1993）3705.[9] G.Peilert et al.,Phys.Rev.,C39（1989）1402.

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[10]	He Zhiyong , Li Zuyu , Duan Limin , Zhang Baoguo , Jin Genming , Dai guangxi , Wang Hongwei , Fu Yanbiao . Space-Time Evolution During Emission of Intermediate Mass Fragmentform ⁴⁰Ar+¹⁵⁹Tb Reaction at 30 MeV/u. Chinese Physics C, 1998, 22(8): 678-683.
[11]	Li Zuyu , Wang Hongwei , He Zhiyong , Dun Limin , Zhang Baoguo , Dai Guangxi , Fu Yanbiao , Jin Genming . Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction. Chinese Physics C, 1998, 22(8): 684-689.
[12]	HO Yu-Kun , YUAN Zhu-Shu , PAN Zheng-Ying . Shuttle Acceleration Mechanism of Nucleons in hi Reactions. Chinese Physics C, 1992, 16(3): 285-288.
[13]	ZHANG Feng-Shou , GE Ling-Xiao . Excitation Energy in Heavy Ion Collisions. Chinese Physics C, 1992, 16(7): 666-669.
[14]	ZHU Yun-Lun , ZHAO Wei-Qin , GAO Chong-Shou . Effect of Secondary Collisions on the K⁺/π⁺ Ratio in RHIC. Chinese Physics C, 1991, 15(7): 606-614.
[15]	WU Guo-Hua , GE Ling-Xiao . EMISSION OF LIGHT PARTICLES IN HEAVY ION COLLISIONS. Chinese Physics C, 1988, 12(4): 541-547.
[16]	LI Jun-Qing , ZHU Jie-Ding , LIU Jan-Ye , ZHU Yong-Tai . MASS DRIFT FLUCTUATION AND THE SHELL EFFECT IN HEAVY ION COLLISIONS. Chinese Physics C, 1988, 12(1): 109-115.
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[18]	CAI Xu , ZHOU Zhuo-Wei . TWO TEMPERATURES EMISSION OF RELATIVISTIC α-PARTICLES IN HIGH-ENERGY HEAVY-ION COLLISIONS. Chinese Physics C, 1987, 11(1): 51-56.
[19]	GE Ling-Xiao , SHEN Wen-Qing , LIU Jian-Ye , WU Guo-Hua . MASS DRIFT IN HEAVY ION REACTION. Chinese Physics C, 1987, 11(5): 674-681.
[20]	WANG RU-LIN , MA WEI-XING . INVESTIGATION ON MULTIPLE SCATTERING MECHANISM IN HEAVY-IONS COLLISIONS. Chinese Physics C, 1981, 5(2): 192-196.

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Zhang Xiaodong and Ge Lingxiao. Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy[J]. Chinese Physics C, 1995, 19(10): 945-951.

Zhang Xiaodong and Ge Lingxiao. Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy[J]. Chinese Physics C, 1995, 19(10): 945-951. shu

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Received: 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

Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy

Corresponding author: Zhang Xiaodong,

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

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1995-10-05

Abstract: Based on the quantum molecular dynamics model, the time and energy evolutions of intermediate mass fragments (IMF)and its dynamical origin are systematically studied for ⁴⁰Ca+⁴⁰Ca central collision.The transition of reaction mechanism, the relation between the density fluctuation and IMF and the time scale of IMF emission are discussed in detail.The relative density fluctuation attains to maximum at energy region of 50-80MeV/u corresponding to an obvious increase of IMF. The possible occurrence of total disassembly at incident energy of about 65MeV/u for the studied reactions is predicted.Meanwhile, a saturation value (140fm/c) for time scale of multifragmentation is obtained.

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Fluctuation and Emission of Intermediate Mass Fragments inHeavy Ion Collisions at Medium Energy

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