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中子晕核引起核反应中的同位旋效应
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：O571.6[理学—粒子物理与原子核物理;理学—物理]
  • 作者机构：[1]天水师范学院数理信息学院基础物理研究所,天水741000, [2]中国科学院近代物理研究所,兰州730000, [3]重离子加速器国家实验室原子核理论中心,兰州730000
  • 相关基金：国家重点基础研究发展计划（批准号G2000077400）,国家自然科学基金重点项目（批准号10435080）,国家自然科学基金面上项目（批准号10447006,10575075）和中国科学院知识创新工程重要方向项目（批准号KJCKZ-SW-N02）资助的课题.
作者： 刘建业[1,2,3], 左维[2,3], 李希国[2,3], 邢永忠[1,3]
关键词： 中子晕核, 原子核阻止, 核子发射中子, 质子比, 同位旋分馏比, neutron-halo nucleus, nuclear stopping, neutron-proton ratio of nucleon emissions, isospin fractionation ratio
中文摘要：

利用同位旋相关的量子分子动力学（IQMD）对中子晕核，8^He和10^He引起核反应中重要的同位旋效应和松散的中子晕结构影响的平均特征进行了研究．因为IQMD中的互作用势和介质中核子-核子碰撞截面灵敏地依赖于碰撞系统的密度分布．而扩展的中子晕密度分布包含了中子晕核的同位旋效应和松散的中子晕结构的平均特征，从而将这些信息通过动力学碰撞带入到反应机理中． 为了清楚地鉴别中子晕核带入反应机理重要的同位旋效应和松散中子晕结构的影响，通过比较中子晕核和相等质量稳定弹核在相同入射道条件下，所得物理观测量之间的差别加以确定．计算结果确实发现具有初始晕核信息的中子扩展密度分布将重要的同位旋效应和松散中子晕结构带入到各种物理观测量中．例如与相等质量稳定相比，中子晕核的晕特征引起了原子核阻止的降低；并明显地增加了核子发射中子-质子比和同位旋分馏比．

英文摘要：

We study the average property of the isospin effect of reaction induced by halo-neutron nuclei 8^He and 10^ He in the intermediate energy heavy ion collisions using the isospin-dependent quantum molecular dynamics model （IQMD）. This study is based on the extended neutron density distribution for the halo-neutron nuclei, which includes the average property of the isospin effect-of reaction mechanism and loose inner structure. The extended neutron density distribution brings an important isospin effect into the average property of reaction mechanism because the interaction potential and nucleon-nucleon（N-N） cross section in IQMD model depend sensitively on the density distribution of colliding system. In order to see clearly the average properties of reaction mechanism induced by halo-neutron nuclei we also compare the results for the neutron-halo colliding systems with those for the corresponding stable colliding systems under the same incident channel condition. We found that the extended density distribution for the neutron-halo projectile brings an important isospin effect to the reaction mechanism, which leads to the decrease of nuclear stopping R, yet induces obvious increase of the neutron-proton ratio of nucleon emissions and isospin fractionation ratio for all beam energies studied in this work, compared to the corresponding stable colliding system. In this case, nuclear stopping, the neutron-proton ratio of nucleon emissions and isospin fractionation ratio induced by halo-neutron nuclei can be used as possible probes for studying the average property of the isospin effect of reaction mechanism and extracting the information of symmetry potential and in-medium N-N cross section by the neutron-halo nuclei in heavy ion collisions.

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同项目期刊论文
Special roles of loose neutron
Entrance channel effects on th
Isospin momentum-dependent int
中子晕核的松散结构在重离子碰撞
中子晕核结构在引起核碎裂中的特
同位旋和动量依赖的相互作用在重
中能重离子碰撞中库仑相互作用对
同位旋依赖的动量相关作用对同位
一类超线性Dirichlet问题的正解
同位旋相关的核子碰撞截面的不同形式与核子的集体流
改进的QMD模型研究不同入射道条件对同位旋分馏强度的影响
核子-核子碰撞截面对同位素标度参数α的介质效应
同位旋依赖的动量相关作用对同位旋分馏的影响随入射道条件的演化
核子-核子碰撞截面对同位素标度参数α的同位旋效应
一类奇异二阶边值问题非零解的存在性
用中子晕弹核探寻同位旋非对称核物质状态方程
相对论小分量波函数对原子光电离截面的影响
量子数n和l对束缚电子径向波函数的影响
中能重离子碰撞中晕核反应动力学
Isospin- and momentum-dependent interaction in isospin-dependent quantum molecular dynamics
从晕中子核引起核反应中提取对称势
Probing the medium effect and isospin dependence of the in-medium nucleon-nucleon cross section in heavy ion collisions
Isospin effects of the Skyrme potential and the momentum dependent interaction at intermediate energy heavy ion collisions
原子（离子）光电离过程中多级效应的理论研究
原子光电离过程中的Cooper最小
Analytical solution of a multidimensional Langevin equation at high friction limits and probability passing a two-dimensional saddle
同位素分布的标度参量对于两体碰撞的同位旋相关性和动量相关作用的依赖
Heavy dibaryons in constituent quark model.
Role of the N*(1535) in??’production
Systematic study of pentaquark states, qq-qq-antiq configuration
Coupling constant for N*(1535)N
Hypernucleus Production by A(p,pK+)?B Reactions.
Role of t-channel ??meson exchange in S-wave ?N and KN scattering
中子晕核结构在引起核碎裂中的特殊作用
中子晕核的松散结构在重离子碰撞动量耗散中的作用
Pentaquark Θ+ 的介质效应
夸克-介子耦合模型
超子的稀有衰变及CP不守恒
Pentaquark Θ^＋对核物质状态方程的影响
Role of the N*(1535) in pp ( pp? and ?- p ( n? reactions
Topological objects in the O(3) nonlinear Sigma model
The Small axial charge of the N(1535) Resonance
On the nature of the the lowest 1/2? baryon nonet and decuplet
Quark deconfinement in neutron star cores
Angular momentum of a brane-world model
奇异核物质中K介子有效质量
Single and double peripheral production of sigmas in proton-proton collisions
从中子晕核引起核反应中提取对称势
同位素分布的标度参量对于两体碰撞的同位旋相关性和动量相关作用的依赖反应机制与结构之间的关系
Study of?KK strong interaction bound state and K+K- atomic state
N*(1710) contribution to ?+ production cross sections in pp collisions
兰州CSR上强子物可研究的研究内容
稀有衰变
K介子阈下产生
核子-核子碰撞截面对通同位素标标度参数的同位旋效应
核子-核子碰撞截面对通同位素标标度参数的界质效应
同位旋依赖的动量相关作用对同位旋分馏过程的影响
中能重离子碰撞中子晕核反应动力学
重夸克偶素质量的相对论夸克模型研究
中能重离子碰撞中库仑相互作用对动量耗散的同位旋效应
同位旋依赖的动量相关作用对同位旋分馏过程的影响和机理
Production of hypernuclei in A(p,K+)ΛB reactions,
Do strange 0+ heavy mesons have molecular structure in the heavy chiral unitary approach
Possible study of hypernuclear physics at CSR
Color confinement multi-quark resonance
S wave K? scattering and effects of ? in J/? (?K*0(892) K+?-
Heavy Quarkonium (+-(- Transitions and a Possible?bb?qq State
P-wave charmonium decays into baryon and antibaryon pairs in quark pair creation model
Quasielastic electron scattering in relativistic mean-field theory
Role of?qqqqq components in electro- magnetic transition ?*N(N*(1535)
Study on form factors at effective vertices.
Sigma meson production in heavy ion collisions at intermediate energies
Multi-quark components in baryons
Penta-quark components in baryons and evidence at BES
Pion Superfluidity and Meson Properties at Finite Isospin Density
Quantum chromodynamics quark benzene
Mirror Nuclei 12B and 12N in time-odd triaxial relativistic mean field theory
Theoretical prediction of differential cross sections for pp ( pn?+ reaction
Hypernucleus Production in Proton- induced Reaction.
Phase transitions in neutron stars within modified quark-meson coupling model
The?qqqqq components and hidden flavor contributions to the baryon magnetic moments
Spin and orbital angular momentum in gauge theory: nucleon spin structure and multipole radiation re
Reply to Comment on ‘Mass and K? coupling of N*(1535)’
Parametrization of fully dressed quark propagator
Antikaon condensation and deconfine- ment phase transition in neutron stars
Isospin violation in ?, J/?, ?’????? via hadronic loops
Role of meson loops in the f0(1370), f0(1500) and f0(1710) decay into V
Helicity amplitude analysis of hyperon nonleptonic decays in J?? or??(2S) decays
BEC-BCS crossover in the Nambu- Jona-Lasinio Model
Subthreshold ? contribution in J/??? decay to ??? and?KK
Possible S-wave bound-states of two pseudoscalar mesons
Chromo-polarizability and  final state interaction
3P0 quark-creation mechanism for ?c decay to vector meson pairs
The strangeness form factors of the proton
Dynamically generated heavy mesons in a heavy chiral unitary approach
Mechanisms for ?cJ ????? decays
Effect of chiral symmetry restoration on pentaquark Θ+ mass and width at finite temperature and dens
J/? transport in QGP and Pt distribution at SPS and RHIC
Phase structure of Nambu-Jona-Lasinio model at finite isospin density
Is X(1812) a (K*?K*) molecular state
Nucleon polarizabilities in the perturbative chiral quark model
Role of the N*(1535) resonance and the ?- p ( KY amplitudes in the OZI forbidden ?- p ( ?N reaction
An alternative approach to the ?-meson -exchange in NN interaction
Strangeness spin, magnetic moment and strangeness configurations of the proton
The?ss asymmetry in nucleon and "NuTeV anomaly"
The?qqqqq components and the magnetic moments of the charmed and the bottomed baryons
Unifeid Expresion of All Integral Variational Principle
Testing the nature of the ?(1520) in the J/?(??K?p and J/?(??????? Reactions
On the structure of ππ invariant mass spectra of ?(4S)(?(1S,2S)π+π? decays
Study on ?NN S-wave elastic scattering cross section and possible bound state with constituent quark
Relativistic effects in two photon decay of 0-+ quarkonium
Heavy Quarkonium (+(- Transitions and a Possible bb?qq State
meson production in nuclear reactions
Antikaon condensation and in-medium kaon and antikaon production in protoneutron stars
Decay ?(3S)(??(1S) (+(- and a possible ?bb?qq state
Study about the binding energy of light hypernuclei 5?He, 4?He and 4?H based on chiral SU(3) quark m
A modified variational method.
Probing sigma meson produced in nuclear reactions
with double Y-ansatz confining potential
镜像核12B和12N的相对论平均场理论研究
同位旋和动量依赖的相关作用在重离子碰撞中的同位旋效应
奇特的五夸克态和重子中的五夸克成分
非相对论Chern-Simons多涡旋解的拓扑结构
Gasser-Leutwyler Coefficients of Chiral Lagrangian for Pseudoscalar Goldstone Bosons
Topological Structure of Vortex Solution in Jackiw-Pi Model
η production in proton-nucleus collisions near threshold
核物质中五夸克奇特重子的有效质量
Study of topological structure of vacuum by?lattice QCD
Phase structure in a quark mass density -and-temperature- dependent model
Theoretical prediction of differential cross sections for the reaction pp ?? pK+? in a resonance mod
Re-study of nucleon pole contribution in J/?(?NN? decay
Confining potential mode in baryon spectrum
Knotted Wave Dislocation with the Hopf Invariant
Thermodynamics with density and temperature dependent particle masses and properties of bulk stran
Influence of in-medium NN cross section on the isoscaling parameter
Strangeness in the proton and N*(1535)
0+ and 1+ heavy mesons in heavy chiral unitary approach
Unitary chiral dynamics in J/( decays into VPP and the role of scalar mesons
Nucleon spin and its gauge invariance and canonical commutation relation
Medium effect of nucleon-nucleon cross section on isoscaling parameter
On pp ( pK?, NK?, pp? - - the basic ingredients for strangeness production in heavy ion collisions
Average property of fragmentation reaction and momentum dissipation in heavy ion collisions
Mass and K? coupling of N*(1535)
J/? Production in Quark-Gluon Plasma
The?ss component of the proton and the strangeness magnetic moment
In-medium K and?K production and?K condensation in neutron star matter
Multi-quark states
General SU(2)L×SU(2)R×U(1)EM sigma model with external sources, dynamical breaking and spontaneous v
Influence of spin-orbit force on NN scattering
Sensitive prober for symmetry potential
S-wave K? scattering and dynamically generated scalar resonances
The linear - model and the observed enhancement in the mass spectrum of?pp in J/?(??pp
Suppression of nuclear Drell-Yan ratios due to energy loss effect
Study on strong decays of DsJ(2632)
晕核反应机制与结构之间的关系
在?(p, p')??反应中的N*(1535)激发及?介子产生
A study of the charm-baryonic structure from ?(1S) decays
Relativistic effects in two-photon decay of quarkonium
The ?? Phase Shifts from ?'(J/????Decays
An effective formulation on quantum hydrodynamics at finite temperatures and densities
Study of QCD vacuum structure by low-lying eigenmodes of overlap-Dirac operator
Dynamically generated 1+ heavy mesons
The ?-resonance effective mass in medium
Isoscaling Parameter as Possible Probe of Medium Effect of Nucleon-Nucleon Cross Section
Average property of isospin effects induced by neutron-halo nuclei
Chemical potential dependence of two-quark condenstate
Theoretical prediction with Monte Carlo simulation for pp( nK+?+ through ?++* resonance production
hypernuclei in a chiral hadronic model
Probing the Medium Effect and Isospin Dependence of in-Medium NN Cross Section in Heavy Ion Collisio
Some theoretical issues of hadron production and properties from J/? decays
Coupled channel effects in ???S-wave interaction
Subtraction of spurious center-of-mass motion in quark delocalization and color screening model
Analysis of time dependent density functional theory of transition wave- lengths of thioaldehedes a
Isospin momentum-dependent interaction and its role on the isospin fractionation ratio in intermedi
Isospin-and-momentum-dependent interaction in isospin-dependent quantum molecular dynamics
Influences of the isospin-dependence of in-medium nuclen-nucleon cross section and momentum dependen
Entrance channel effects on the isospin fractionation at the intermediate energy heavy ion collision
Topological Structure of Vortex Solution in Jackiw-Pi Model
Observation of two new N* peaks in J/? (?np?- and?pn?+ decays
Covariant tensor formalism for PWA of ? decays into ??BB, ??V and ?(2S) (??c0,1,2 with ?c0,1,2(?KK??
Study a0(980)-f0(980) mixing from a0(980)(f0(980) transition
The role of ?++*(1620) resonances in pp(nK+?+ reaction and its important implications
DD correlations as a sensitive probe for thermalization in high energy nuclear collisions
Glueball -?QQ mixing and OZI rule violation in the hadronic decays of heavy quarkonia
Special roles of loose neutron-halo structure on the fragmention and momentum dissipation in heavy i
Hadronization approach for a quark- gluon plasma in relativistic heavy ion collisions
Possibility of measuring a0(980)- f0(980) mixing from J/?(? a0
Differential directed flow of K+ meson within covariant kaon dynamics
Binding energy of light double hypernuclei ???He, ???He, ???H, ???He and ???H in chiral SU(3) quark
Paris?NN Potential and the possible resonance states of?pp
Spectra of free diquark in the Bethe- Salpeter approach
Tensor interaction effect in dibaryon
Nuclear effects in deep inelastic scattering of charged-current neutrino off nuclear target
Energy-Level shifts of a stationary hydrogen atom in a static external gravi- tational field with Sc
Isospin and a possible interpretation of the newly observed X(1576)
Eta production in proton-nucleus collisions near-threshold
A new mechanism for electromagnetic transition ?*N ( N*(1535)
Statistical analysis of aggregation in freeway traffic
同位旋相关的核子碰撞截面的不同形式与核子的集体流
改进的QMD模型研究不同入射道条件对同位旋分馏强度的影响
核子-核子碰撞截面对同位素标度参数α的介质效应
同位旋依赖的动量相关作用对同位旋分馏的影响随入射道条件的演化
核子-核子碰撞截面对同位素标度参数α的同位旋效应
用中子晕弹核探寻同位旋非对称核物质状态方程
中能重离子碰撞中晕核反应动力学
Isospin- and momentum-dependent interaction in isospin-dependent quantum molecular dynamics
在pA碰撞中K~±,η和ф介子的阈下产生
Dibaryon Signals in NN Scattering Data and Further Measurement at COSY,LEPS and CSR
利用手征SU（3）夸克模型研究轻双∧超核^6∧∧He,^5∧∧He,^5∧∧H,^4∧∧He和^4∧∧H的结合能
同位旋非对称核物质状态方程
核物质状态方程中动量相关作用可能的探针
SU（2）Chern-Simons涡旋解的拓扑结构
Effective Mass of Pentaquark θ＋ in Nuclear Mattert
Jackiw-Pi模型的新涡旋解
核物质中△（1232）粒子的介质效应
Charmed Baryon in Diquark Model
奇特的“五夸克态”和重子中的五夸克成分
线性σ模型和在 J/ψ→γpp^-的PP^-质量谱中观测到的增强现象的pp质量谱中观测到的增强现象的PP质量谱中观测到的增强现象
S波Kπ散射以及动力学产生标量介子
Structure of Spinor Field in Chiral Soliton Model
Unified Expressions of AH Integral Variational Principles
Density Dependent Coupling Constant of Pentaquark θ＋ in Nuclear Matter
Role of t-channel meson exchanges in S-wave πN and KN scatterings
Improved Quark Mass Density-dependent Model with Quark andσ,ω Meson Fields Coupling
Effects of Δ-Isobars on Neutron Stars
从晕中子核引起核反应中提取对称势
Probing the medium effect and isospin dependence of the in-medium nucleon-nucleon cross section in heavy ion collisions
核物质中五夸克重子态的有效质量
Isospin effects of the Skyrme potential and the momentum dependent interaction at intermediate energy heavy ion collisions
Gravitational Corrections to Energy-Levels of a Hydrogen Atom
Angular Momentum of Vortex in Jackiw-Pi Model
Improved Quark-Meson Model
Δ Decay Width in Nuclear Matter
Energy-momentum of a 3-brane Model
Angular Momentum of a 3-brane Model
Transverse ??momentum dependence of directed flow of Λ hyperon within covariant kaon dynamics.
Analytical solution of multidimensional Langevin equation at high friction limits and probability pa
Collective flow in heavy ion collisions for ???Eb = 0.25 - 1.15 GeV/nucleon,
Probing sigma meson produced in nuclear ??reactions,
Parton dynamics and hadronization from the sQGP，
Differential directed flow of K+ meson within covariant kaon dynamics,
Sigma meson production in nuclear ???reactions
Sigma meson production in heavy ???ion collisions at intermediate energies
Isospin-and-momentum-dependent interaction in isospin-dependent quantum molecular dynamics
Isoscaling Parameter as Possible Probe of Medium Effect of Nucleon-NucleonCross Section
Hadronization in Parton-Hadron-string-Dynamics,
同位旋相关的核子碰撞截面的不同形式与核子的集体流
改进的QMD模型研究不同入射道条件对同位旋分馏强度的影响
核子-核子碰撞截面对同位素标度参数α的介质效应
同位旋依赖的动量相关作用对同位旋分馏的影响随入射道条件的演化
核子-核子碰撞截面对同位素标度参数α的同位旋效应
用中子晕弹核探寻同位旋非对称核物质状态方程
中能重离子碰撞中晕核反应动力学
Isospin- and momentum-dependent interaction in isospin-dependent quantum molecular dynamics
同位旋非对称核物质状态方程
核物质状态方程中动量相关作用可能的探针
从晕中子核引起核反应中提取对称势
Probing the medium effect and isospin dependence of the in-medium nucleon-nucleon cross section in heavy ion collisions
Isospin effects of the Skyrme potential and the momentum dependent interaction at intermediate energy heavy ion collisions
高密核物质中核子的运动对于K介子的等效质量和能量的影响
K介子协变动力学及其准粒子模型的性质
原子实对离子n壳层辐射复合截面的影响
Analytical solution of a multidimensional Langevin equation at high friction limits and probability passing a two-dimensional saddle
同位素分布的标度参量对于两体碰撞的同位旋相关性和动量相关作用的依赖
交换势对光电离截面的影响
期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876