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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 {2. physics,Chinese Academy of Sciences,Beijing 100080,china ) 3(center of {2. nuclear physics,national laboratory of heavy {12. 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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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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Two-body correlations in halo nuclei with a relativistic Hartree approach

Two-body correlations in halo nuclei with a relativistic Har...

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CCAST“放射性束物理”研讨会

作者： W.Z. Jiang, Z.Y. Zhu and Z.Z. Ren Shanghai Institute of nuclear Research, Chinese Academy of Sciences,Shanghai 2.1800,china {2. of theoretical nuclear physics,national laboratory of heavy ion accelerator, lanzhou {12.,china Department of physics, Nanjing University, Nanjing 2.0093, china

The relativistic density dependent Hartree framework,where the relativistic two-bodycorrelations are incorporated,is developed to describe properties of halo *** phe-nomenology of two-body correlations in halo nuclei is considered ***-neutron halo nucleus Li,together with the one-neutron halo nucleus C,is *** energies and halo tails of above halo nuclei are nicely *** large root-mean-square (rms) radii of halo nulcei are close to those extractedfrom the experimental *** is found that the contribution of two-body correlations isimportant to describe halo nuclei,especially for nuclei with two or more halo neutrons.

关键词： Two-body correlation halo nucleus relativistic Hartree approach

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The Isovector Channel of the Energy Density Functional

The Isovector Channel of the Energy Density Functional

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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 {12. 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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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 Informat{2. and Measurements, Beijing 100084 Institute of theoretical physics, Chinese Academy of Sciences, Beijing 100080 center of nuclear theory, lanzhou heavy {2. 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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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 laboratory of nuclear physics and Technology Peking University,Beijing 100871, china) 3(center of theoretical nuclear physics,national laboratory of heavy ion accelerator,lanzhou 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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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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Isospin Dependent Effective Interaction

Isospin Dependent Effective Interaction

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CCAST“放射性束物理”研讨会

作者： Ma Zhong-yu, Liu Ling, Chen Bao-qiu china Institute of Atomic Energy, Beijing 102.13also center of {2. theoretical physics,national laboratory of heavy ion acceleratorXanzhou 730000 and Institute of theoretical physics.Beijing 100080

The asymmetric nuclear matter is investigated in the DBHF approach with a newdecomposition of the Dirac structure of nucleon self-energy from the G matrix. It isfound that the isospin dependence of the scalar and vector potentials is rather weak,although both potentials for neutron(proton) become deep(shallow) in the neutron richnuclear matter. The results in asymmetric nuclear matter are rather different fromthose obtained in a simple method, where the nucleon self-energy is deduced from thesingle particle energy. The nuclear binding energy as a function of the asymmetryparameter fulfills the empirical parabolic law up to very extreme isospin asymmetricnuclear matter in the DBHF approach. The behavior of the density dependence of theasymmetry energy is different from those obtained in non-relativistic approaches,although both give similar asymmetry energy at the nuclear saturation density.

关键词： Dirac structure of nucleon self-energy Dirac G matrix Asymmetric nuclear matter

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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 laboratory of nuclear physics and Technology,Peking University,Beijing 100871, china) 3(center of theoretical nuclear physics,national laboratory of heavy ion accelerator,lanzhou 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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有限温度下Na4团簇的异构化

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原子与分子物理学报 1999年第1期16卷 33-38页

作者：王锋张丰收柯学志朱志远兰州重离子加速器国家实验室原子核理论研究中心中国科学院近代物理研究所中国科学院上海原子核所

在紧密结合分子动力学模型基础上，对Ｎａ４的两种异构体Ｄ２ｈ和Ｃ２ｖ的结构性质随温度的变化进行了系统性研究。发现在低温时（温度Ｔ＜１００Ｋ），这两种异构体具有明显的不同；在较高温度时（温度Ｔ≥１００Ｋ），能够发现Ｃ２ｖ... 详细信息

在紧密结合分子动力学模型基础上，对Ｎａ４的两种异构体Ｄ２ｈ和Ｃ２ｖ的结构性质随温度的变化进行了系统性研究。发现在低温时（温度Ｔ＜１００Ｋ），这两种异构体具有明显的不同；在较高温度时（温度Ｔ≥１００Ｋ），能够发现Ｃ２ｖ和Ｄ２ｈ两种异构体之间的转变；在更高温度时（温度Ｔ＝４００Ｋ），这两种异构体Ｃ２ｖ和Ｄ２ｈ都处于液态。

关键词： Na4团簇异构化紧密结合分子动力学模型

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