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反对称分子动力学模型中的冻结概念(英文)

原子核物理评论 2015年第2期32卷 170-174页

作者：林炜平刘星泉黄美容张苏雅拉吐陈志强王建松韩瑞刘建立任培培石福栋 wada roy 中国科学院近代物理研究所兰州730000 中国科学院大学北京100049

给出了反对称分子动力学模型(AMD)计算的50 Me V/nucleon112Sn+112Sn反应的分析结果。该研究是反对称分子动力学模型中统计冻结概念的部分研究结果。利用自洽法结合修正的Fisher模型,提取了发射源的温度和密度分别为T=(6.1±0.2)Me V,ρ... 详细信息

给出了反对称分子动力学模型(AMD)计算的50 Me V/nucleon112Sn+112Sn反应的分析结果。该研究是反对称分子动力学模型中统计冻结概念的部分研究结果。利用自洽法结合修正的Fisher模型,提取了发射源的温度和密度分别为T=(6.1±0.2)Me V,ρ/ρ0=0.69±0.03。通过与AMD模型计算的系统在时间演化过程中的最大密度比较,得出碎片发射源的密度远小于系统的最大密度。利用自洽法提取的温度和密度与35 Me V/nucleon的40Ca+40Ca反应系统及40 Me V/nucleon的64Zn+112Sn反应系统所提取的温度和密度非常接近。该结果表明反对称分子动力学模型中,系统在中等质量碎片形成时刻处于统计冻结体积。

关键词：统计冻结反对称分子动力学重离子核反应自洽法密度温度

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5-27 Study of Energy Spectra of Light Charged Particles from 12C+12C at 95 AMeV with Moving Source Model

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IMP & HIRFL Annual Report 2016年第1期 238-239页

作者： Tian Guoyu Chen Zhiqiang Han Rui roy wada 不详

The 12C+12C reaction at 95 MeV/u was performed at GANIL[1],motivated by the hadron beam therapy with carbon ions to treat cancerous *** Ref.[2]the angular distributions and energy spectra of the outgoing particles were compared with the reaction models embedded in the GEANT4 and none of the toolkits provide good enough reproductions of the experimental *** order to reproduce the energy spectra and elucidate the production mechanism of LCPs,the moving source model was applied to analyze the energy spectra of light charged particles.

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5-28 Study of Light Charged Particles Production in 12C+12C at 95 AMeV with AMD-FM Model

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IMP & HIRFL Annual Report 2016年第1期 240-240页

作者： Tian Guoyu Chen Zhiqiang Han Rui roy wada 不详

Light charged particles(LCPs)are copiously produced in various kinds of nuclear *** one of the experimental observables,the energy spectra of the emitted particles play important role for studying the transport mechanism of nucleons in nuclear *** this work,the production of LCPs from 12C+12C reaction at 95 MeV/u are investigated by using a modified version of antisymmetrized molecular dynamics(AMD-FM)[1],coupled with GEMINI++[2].

关键词：

Cluster Correlations and Secondary Decay Effect in the Intermediate Mass Fragments Emission in ^(12)C+^(12)C at 95 MeV/u

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IMP & HIRFL Annual Report 2018年第1期 222-222页

作者： Tian Guoyu Chen Zhiqiang Han Rui roy wada 不详

The production of clusters in transport models is very ***,most transport models cannot describe clusters properly due to the assumption of single-nucleon motion in the mean *** Refs.[1–3],the cluster correlations have been introduced in AMD approach by improving the two-nucleon collision *** this work,the intermediate mass fragment production in 12C+12C reaction at 95 MeV/u is investigated using the AMD approach with the cluster correlation,coupled with Gemini++.

关键词： process. field. MeV/u

用于ADS散裂靶研制的核数据实验测量装置(英文)

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IMP & HIRFL Annual Report 2012年 232-233页

作者：陈志强 Liu Jianli Han Rui Shi Fudong Zhang Suyalatu Liu Xingquan Jin Zengxue Lin Weiping roy wada

The nuclear data measurement facility for ADS spallation target design has been preliminarily constructed,which provides a very important platform for the experimental measurements of spallation *** facility consists of a high vacuum thin metal foil ion beam window,a remote controlled moving target system,a beam pickup time-of-flight detection system,a light charged particles time-of-flight spec-

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中能重离子核反应中径向流的碎片同位旋依赖(英文)

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IMP & HIRFL Annual Report 2012年 57-59页

作者：刘星泉 wada roy Chen Zhiqiang Huang Meirong Lin Weiping Zhang Suyalatu Jin Zengxue Han Rui Liu Jianli Shi Fudong

Isospin effects,especially from system isospin asymmetry and fragment isospin asymmetry,are introduced into transverse flow extraction mainly via various physical quantities such as symmetry potential,NN cross section,and coulomb *** lots of efforts have been carried out to study the isospin effect by comparing the colliding pairs with different isospin in both experiment[1-5]and theoretical calculations[6-8],in these paper,we focus on the fragment isospin effect on the flow for isobaric fragments.

关键词：

中能重离子核反应中径向流的碎片电荷依赖(英文)

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IMP & HIRFL Annual Report 2012年 60-61页

作者：刘星泉 wada roy Chen Zhiqiang Huang Meirong Lin Weiping Zhang Suyalatu Jin Zengxue Han Rui Liu Jianli Shi Fudong

In our present study,the heavy-ion reactions of 40Ca+40Ca,48Ca+48Ca at 35 AMeV have been simulated by AMD(Antisymmetrized Molecular Dynamics Model)and CoMD-II(Constrained Molecular Dynamics Model-II),allowing us to avoid the risk of model dependence and obtain the general properties of transverse flow,by comparing comparing the transverse flow extracted from both AMD and CoMD models.

关键词：

Transverse Flow in Heavy-ion Reaction at Intermediate Energies

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IMP & HIRFL Annual Report 2011年第1期 58-59页

作者： Liu Xingquan Yang Kun Huang Meirong Zhang Suyalatu Xi Yinyin roy wada Chen Zhiqiang

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同位素产额比温度(英文)

IMP & HIRFL Annual Report 2012年 70-71页

作者：林炜平 Liu Xingquang Huang Meirong Zhang Suyalatu Han Rui Liu Jianli Shi Fudong Jin Zengxue Ren Peipei Jia Baolu Chen Zhiqiang roy wada

The isotopic thermometer was used in our study to extract the temperature in our *** experiment was performed at the K-500superconducting cyclotron facility at Texas A&M University.64,70Zn and 64 Ni beams were used to irradiate 58,64 Ni,112,124Sn,197 Au,and 232 Th targets at 40 *** detector setup is same as that in Ref.[1].

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