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第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Xiaobao Wang~1 Chong Qi~2.Furong Xu~(1,3) 1 School of physics,and State Key laboratory of{2. physics and Technology,Peking University,Beijing 100871,China 2.KTH,Alba Nova University center,SE-10691 Stockholm,Sweden. 3 center for theoretical{2. physics,national laboratory for heavy Ion physics,lanzhou 730000,China

Both relativistic and non-relativistic energy density functional models have been widely used in describing the nuclear many-body *** calculations show that both relativistic and non-relativistic models give quite similar results for the ground state properties and low-energy dynamics of stable ***,significant differences are found when calculations go to the extreme cases of high isospin and high *** origin of these differences is still not *** non-relativistic Skyrme-Hartree-Fock (SHF) model has been extensively employed in the investigation of nuclear structure since the first work of Vautherin and *** 1970s,almost at the same time as SHF,the Relativistic-Mean-Field(RMF) model was developed to give a competitive description of finite *** relativistic Quark-Meson-Coupling model(QMC) was proposed by ***,the Hartree approximation is usually used in both RMF and QMC *** real treatment of the Fock term remains *** comparisons between relativistic models within the non-relativistic Hartree-Fock approximation and the Skyrme model can be instructive in clearing the *** this work,we compare the non-relativistic approximations of the QMC and RMF models and SHF models,with focusing on possible *** list the QMC energy density functional within the Hartree-Fock approximation and make comparison with RMF and Skyrme *** find that the discrepancy of these models is mainly caused by the isovector channel of the energy density functional.A new Skyrme parametrization is obtained by the *** also give the calculation results of the new parametrization.

关键词： energy density functional non-relativistic approximation Skyrme parametrization

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中能重离子碰撞过程中的同位旋分馏

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物理学进展 2004年第2期24卷 127-137页

作者：邢永忠郭文军刘建业兰州重离子加速器国家实验室原子核理论中心中国科学院近代物理研究所兰州730000

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不... 详细信息

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不对称核物质状态方程的可能性进行了讨论和分析。并进一步对该问题的深入研究进行了讨论。

关键词：中能重离子碰撞同位旋分馏同位旋物理分馏强度同位旋不对称核物质状态方程

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Relativistic Consistent Angular-momentum Projected Shell-model

Relativistic Consistent Angular-momentum Projected Shell-mod...

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第十二届全国核物理大会暨第七届会员代表大会

作者： Yan-Song Li~(1,2., and GuiLu Long~(1,2.3,4) Department of physics, Tsinghua University, Beijing 100084 Key laboratory For Quantum Information and Measurements, Beijing 100084 Institute of{2. physics, Chinese Academy of Sciences, Beijing 100080 center of nuclear theory, lanzhou heavy Ion Accelerator national laboratory, lanzhou, 730000

We develop a relativistic nuclear structure model, the RElativistic Consistent Angular-momentum Projected Shell-model(RECAPS)[1,2. which combines the relativistic mean field theory with the angular-momentum projection method. In this new model, nuclear ground-state properties are first calculated consistently using

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Production of dileptons with intermediate masses in an expanding quark-gluon matter

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nuclear Science and Techniques 2000年第3期11卷 183-186页

作者： HE Ze-Jun, JIANG Wei-Zhou, ZHOU Wen-Jie, ZHANG Jia-Ju (center of theoretical{2. physics, the national laboratory of heavy Ion Accelerator, lanzhou 750000 Shanghai Institute of{2. Research, the Chinese Academy of Sciences Shanghai 2.1800) 兰州原子核理论研究中心重离子加速器国家实验室甘肃兰州 730000 中科院上海原子核所上海 201800

A study of dilepton spectra, in intermediate mass region (IMR), from main background sources, quark phase, and secondary processes in hadronic phase on the basis of a relativistic hydrodynadric model has been carried out. The comparison between these results indicates that in this mass region the contribution from the background sources dominates, and due to the effect of the phase boundary on the evolution of the system the contribution from the quark phase becomes more important than that from secondary processes.

关键词：粒子物理学轻子流体动力学模型产物夸克胶子 IMR 强子

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A bound on the effective boson number from shape phase transition in IBM

A bound on the effective boson number from shape phase trans...

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第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Yu Zhang~(1 2.) Zhan-feng Hou~(2.) Yu-xin Liu~(2.3)) Feng Pan~(1)) 1(Department of physics,Liaoning Normal University,Dalian 11602.,China) 2.Department of physics and State Key{2. of nuclear physics and Technology Peking University,Beijing 100871, China) 3(center of theoretical nuclear physics,national{2. of heavy Ion Accelerator,{12. 730000,China)

We study the effects driven by the boson number on the critical behavior of some observable quantities that are sensitive to the nuclear shape phase transitions in the interacting boson model（IBM）.By comparing the experiments with the theory calculation,we find that the effective boson number in IBM best consistent to experiments is not more than the total pairs number of valence nucleons or holes,and an up bound of the effective boson number can be found in the U（5）-O（6） transition region at least in ***, two trajectories of second order phase transitions,the isotones with neutron number N_n=62.and the one with N_n=74,are confirmed by comparing the observable quantities in experiments with those in theory

关键词： keyword1 keyword2 keyword3 keyword4

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Systematic Study of Survival Probability of Excited Superheavy Nucleus

Systematic Study of Survival Probability of Excited Superhea...

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第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Xia ChengJun~(1 1)) Zhou Shangui~(1,3 2.) Sun Baoxi~(1 3)) Zhao Enguang~(1.3 4)) 1(Mathematical and Physical Sciences Department,Beijing University of Technology,Beijing 10012.,China ) 2.Institute of theoretical physics,Chinese Academy of Sciences,Beijing 100080,China ) 3({2. of theoretical nuclear physics,national laboratory of heavy Ion Accelerator,lanzhou 730000,China)

theoretical estimates for the survival probability in 1n-channel of about 1845 excited isotopes of superheavy elements with 100≤Z≤134 are made using statistical ***{2. characteristics predicted in finite-range droplet macroscopic model are used *** our calculation it turns out that the stability island is still valid at the optimum excitation energy,but nucleus in neutron-rich area also possess higher survival probability due to the lower neutron separation *** sensitivity of the survival probability on{2. properties is also discussed.

关键词： survival probablity superheavy elements Fermi-gas model stability island

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Empirical evidence for the nucleus at the critical point of the Uπν（5）-SUπν*（3） transition in IBM2

Empirical evidence for the nucleus at the critical point of ...

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第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Da-li Zhang~(1 1)) Zhan-feng Hou~(2.2.) Yu-xin Liu~(2.3 3)) 1(Department of physics,Huzhou Techer's College,Huzhou 313000,Zhejiang,China) 2.Department of physics and State Key{2. of nuclear physics and Technology,Peking University,Beijing 100871, China) 3(center of theoretical nuclear physics,national{2. of heavy Ion Accelerator,{12. 730000,China)

By analyzing the low-lying energy spectrum,certain energy rations and B（E2. ratios,we show that the predicted properties of the critical point of the transition from U（5） symmetry to SU（3） symmetry agree well with the experimental data of nucleus *** indicates that Xe is an empirical evidence for the nucleus at the critical point of the U（5）-SU（3） transition and such a critical point may involve considerable constituent ofγ-unstable rotation.

关键词： 130Xe second-order transition

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Status of theoretical Study on Superheavy Nuclei

Status of Theoretical Study on Superheavy Nuclei

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CCAST“放射性束物理”研讨会

作者： Zhongzhou Ren(1) Department of physics, Nanjing University, Nanjing 2.0008, P. R. China (2. center of{2. nuclear physics, Institute of Modern physics, lanzhou 730000, P. R.China

＜正＞At first I will briefly review the new experimental progress of superheavy *** I willtalk about theoretical studies on superheavy *** is mainly on the structure of *** upper limit and a lower limit for the binding energy of superheavy nuclei areestablished based on the relativistic mean-field *** is useful for future calculationsof the cross-section to synthesize a new superheavy *** is also helpful to *** of alpha decay for a unknown superheavy *** some suggestions areproposed in order to speed up the progress of study on superheavy nuclei in China.

关键词： superheavy elements alpha-decay energies lifetimes name of future new element: Chinium (Cn).

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偶偶Cd同位素核的负宇称带研究

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四川大学学报（自然科学版） 2003年第1期40卷 77-80页

作者：徐延冰刘英太廖继志兰州重离子加速器国家实验室原子核理论中心兰州730000 北京大学技术物理系北京100871 四川大学物理科学与技术学院成都610064

作者将具有正宇称的gds轨道空间扩大到包含具有负宇称的1h11/2.道,采用修正的表面δ相互作用(MSDI),对106Cd和108Cd两个偶偶核作了形变Hatree Fock(HF)计算,得到了基态和一些激发态的解.同时,还用近似角动量投影形变Hartree Fock(PDHF... 详细信息

作者将具有正宇称的gds轨道空间扩大到包含具有负宇称的1h11/2.道,采用修正的表面δ相互作用(MSDI),对106Cd和108Cd两个偶偶核作了形变Hatree Fock(HF)计算,得到了基态和一些激发态的解.同时,还用近似角动量投影形变Hartree Fock(PDHF)方法,对106Cd和108Cd进行了能谱计算,得到其正、负宇称带的解,计算结果与实验谱基本一致.

关键词：偶偶Cd同位素核角动量投影单粒子能谱负宇称带核结构基态激发态

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Superfluidity in finite nuclei based on a realistic NN interaction

Superfluidity in finite nuclei based on a realistic NN inter...

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第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Yuan Tian~(1 1)) Zhongyu Ma~(1,2.2.) Peter Ring~(3 3)) 1(China Institute of Atomic Energy,Beijing 102.13,P.R.of China) 2.Centre of theoretical nuclear{2.,national laboratory of heavy collision,lanzhou 730000,China) 3(Physikdepartment,Technische Universitat Munchen,D-85748,Garching,Germany)

Recently a new method was proposed to solve the Relativistic Hartree-Bogoliubov（RHB） equations for finite nuclei use separable pairing forces in momentum *** method is now applied to perform ab-initio calculations for superfluidity in finite nuclei based on a realistic bare nucleon-nucleon interaction. We start from the separable form of the Paris potential and we use it without any further approximation for applications based on Covariant Density Functional *** pairing properties of ground states and low-lying quadrupole excitations are investigated in isotope and isotone chains of spherical nuclei in the framework of Relativistic Hartree-Bogoliubov theory and Relativistic Quasiparticle Random Phase Approximation （RQRPA）.We find approximation agreement with experiment data for pairing gaps and good agreement for the excitation energies of the lowest 2.states as well as the corresponding B（E2.↑values.

关键词： Bare N N interaction Density functional theory RHB RQRPA

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