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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[14]	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.
[15]	LIU Jian-Ye , QIAO Wei-Min , LI Jun-Qing , SHEN Wen-Qing , CHEN Pei-Jun , TAN Nan-Hong . THE CHARGE RELAXATION PROCESS IN THE DISSIPATIVE HEAVY-ION COLLISIONS OF THE MASS ASYMMETRY SYSTEM. Chinese Physics C, 1988, 12(5): 701-707.
[16]	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.
[17]	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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[19]	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.
[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
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

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

Zhang Xiaodong ^,
Ge Lingxiao

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.