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不稳定原子核核子结团效应的研究
  • 项目名称：不稳定原子核核子结团效应的研究
  • 项目类别：重点项目
  • 批准号：11035001
  • 申请代码：A050305
  • 项目来源：国家自然科学基金
  • 研究期限：2011-01-01-2014-12-31
  • 项目负责人：任中洲
  • 负责人职称：教授
  • 依托单位：南京大学
  • 批准年度：2010
中文摘要：

不稳定原子核性质的研究是当前国际核物理研究的热点之一，已有的研究主要集中于不稳定原子核的单粒子性质和集体激发性质，但对核子结团性质的研究比较稀少。本项目主要研究不稳定原子核中核子结团效应和核子结团衰变。理论上首先用现有核衰变模型计算不稳定原子核alpha衰变寿命和重结团衰变（如14C放射性等）寿命，深入分析现有实验数据和理论计算结果的差异，提取不稳定原子核基态和激发态核子结团（如alpha结团）的形成几率，建立计算不稳定核衰变寿命和核子结团几率的可靠微观模型。实验上通过核子结团转移反应和敲出反应，研究轻丰中子核的集团结构，提取结构谱因子以及基态和激发态衰变能量和寿命。在此基础上，开展重核中的alpha集团结构和衰变性质的实验研究。 通过实验测量和理论计算的紧密配合，深入研究轻丰中子原子核和重核的核子集团结构和效应。

中文主题词： 结团结构；不稳定原子核；结团衰变宽度；；
英文摘要：

Cluster structure；Unstable nuclei；Cluster-decay width；；

英文主题词： Cluster structure；Unstable nuclei；Cluster-decay width；；
结论摘要：

本项目研究不稳定原子核核子结团性质，主要包括两个方面一是轻丰中子核8He、12Be、20Ne和9Be的核子结团结构，研究激发态的能量和寿命；二是超重核的结构和衰变性质，发展计算核衰变性质的新模型。实验研究方面，利用日本理化学研究所和兰州重离子加速器的放射性束流线，进行了8He的敲出反应实验和12Be的结团破碎实验，得到了一批新实验结果。例如，首次明确了内核碎片和价核子的敲出反应机制，提取了8He中6He结团结构的谱因子。鉴别出12Be 中4He+8He的分子转动带，首次测量到大的单极跃迁强度和结团衰变宽度。这对提取不稳定核的结团结构信息具有重要意义。理论上发展了研究轻核核子结团现象的微观模型，提出了非局域化结团的概念，并指出原子核内结团的几何结构是由纯动力学原因导致的，在增加额外中子的条件下依然成立。基于不稳定核衰变实验数据，首次成功提取了超重核和远离稳定线奇特核的电荷均方根半径，指出从核衰变实验数据提取不稳定核半径是获得原子核半径的新途径。完善了计算形变核alpha衰变性质的多道结团模型，进行了形变奇A核和奇奇核alpha衰变精细结构的耦合道计算，理论结果与实验数据符合很好，分析了形变重核基态和激发态alpha结团的形成几率。项目资助期间，正式发表论文130余篇，其中Phys. Rev. Lett. 2篇，Phys. Lett. B 2篇，Phys. Rev. C 34篇，还培养了22名博士，主办了2个国际会议。

成果综合统计
成果类型
数量
  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
  • 148
  • 8
  • 0
  • 0
  • 0
期刊论文
Possible alpha decay chains from isotopes of superheavy element 120
Calculation of evaporation residue cross sections for the synthesis of superheavy nuclei in hot fusi
Knockout Reaction Mechanism for He-6(+)
Effects of short-range correlation on the density dependence of nuclear symmetry energy at supra-sat
Beta-decay rates of neutron-rich Kr and Sr isotopes in the deformed QRPA with realistic interactions
Some Key Problems Related to Radioactive Ion Beam Physics
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Determination of the cluster spectroscopic factor of the 10.3 MeV state in Be-12
The Beijing ISOL initial conceptual design report
Observation of New Isotope Ag-131 via the Two-Step Fragmentation Technique
放射性束物理实验发展现状
Alpha-decay half-lives in medium mass nuclei
Unified description of alpha-decay and cluster radioactivity in the trans-tin region
alpha decay to members of favored bands in both even-even and odd-A nuclei
alpha-Decay near the shell closure from ground and isomeric states
Half-lives and fine structure for the alpha decay of deformed even-even nuclei
A theoretical study of halo structure using elastic proton-nucleus scattering
利用直接核反应研究轻丰中子核的奇特结构
Construction and calibration of the multi-neutron correlation spectrometer at Peking University
Development of RIB facilities in Asia
The container picture with two-alpha correlation for the ground state of C-12
Competition between alpha- and beta(+)-decay modes for unstable even-even nuclei
beta-decay rates of neutron-rich Zr and Mo isotopes in the deformed quasiparticle random-phase appro
Nonlocalized cluster dynamics and nuclear molecular structure
Attempt to link the neutron skin thickness of 208Pb with the symmetry energy through cluster radioac
Systematics of fine structure in the alpha decay of deformed odd-mass nuclei
beta-decay rates of r-process waiting-point nuclei in the extended quasiparticle random-phase approx
Solution of the two-qubit quantum Rabi model and its exceptional eigenstates
Three-Body Problem of H-2(+) Ion
Calculations of the beta-decay half-lives of neutron-rich nuclei
Spectrum of a microcavity with single quantum nonlinearity
Examining the energy dependence of symmetry potential in asymmetric nuclear matter
Stability of superheavy nuclei against alpha-decay and spontaneous fission
Theoretical description of fine structure in the alpha decay of heavy odd-odd nuclei
A systematic study of the fission and evaporation residue excitation functions in complete fusion re
Exact solutions of the generalized two-photon and two-qubit Rabi models
Predictions on properties of alpha decay and spontaneous fission in superheavy odd-Z nuclei
Properties of deformed even-even nuclei near Z=20 in an improved quark mass density-dependent model
Coupled-channels study of fine structure in the alpha decay of platinum isotopes
Observation of Enhanced Monopole Strength and Clustering in Be-12
Half-lives of alpha decay from natural nuclides and from superheavy elements
Beta-decay half-lives including first-forbidden contributions for neutron-rich Zn isotopes in the ex
Recoiled Proton Tagged Knockout Reaction for He-8
连续束模式下β衰变研究的实验装置
alpha-cluster structure above doubly closed shells in a generalized density-dependent cluster model
核物理与核探测、核分析技术的应用
New Measurements for He-8 Excited States
Systematic calculations of a decay properties based on results from recent experiments
Theoretical study on neutron skin thickness of Ca isotopes by parity-violating electron scattering
Bound 0(+) Excited States of Three-Body Systems with Short-Range Two-Body Interactions
Systematic law for half-lives of double-beta decay with two neutrinos
Tentative probe into the nuclear charge radii of superheavy odd-mass and odd-odd nuclei
Systematic calculations on exotic alpha-decay half-lives of nuclei with N=125, 126, 127
Shell model calculations for the allowed Gamow-Teller beta-decays of light nuclei
Helium-helium clustering states in 12Be
Phonon elastic scattering on two-level systems in cryogenic piezoelectric crystals<br />
Effects of Λ hyperon on localization and clustering in p- and sd-shell nuclei
Neutron-hole states in Ar-45 from H-1(Ar-46, d) Ar-45 reactions
Efimov effect in a three-body system with attractive r(-2) two-body interactions
Systematic study of new data for extreme alpha decays
Uncertainty principle in larmor clock
Quantum phase transition of light in a finite size Dicke model with Kerr-type nonlinearity
Energy-dependent optical model potentials for alpha and deuteron with C-12
Experimental Study of Two-Neutron Correlation in He-8(+)
Knockout reaction induced by He-6 at 82.3 MeV/u
Model-independent trend of α-preformation probability
Deformed even-even nuclei in a quark-meson coupling model with tensor coupling
Quantum tunneling effect of a driven inverted harmonic oscillator
Benford&#39;;s law and cross- sections of A(n, alpha)B reactions
A New Uniform Calibration Method for Double-Sided Silicon Strip Detectors
alpha decay of the new neutron-deficient isotope Ac-205
Study of the structure of unstable nuclei through the reaction experiments
Knockout reaction mechanism studied by He-6 projectile
Knockout reaction induced by He-6 at 61.2 MeV/u
Nuclear clusters bound to doubly magic nuclei: The case of 212Po
Shell model calculations for the beta(-)-decays of Z=9-13 nuclei
Quantum tunneling effect of a time-dependent inverted harmonic oscillator
Study of spatial resolution properties of a glass RPC
Charge collection and equalization for position-sensitive silicon strip detector
Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei
Quasielastic scattering of He-6 from C-12 at 82.3 MeV/nucleon
Theoretical Study on Alpha-Decay Chains of (294)(177)117 and (293)(176)117
Theoretical study on parity-violating electron scattering off isotonic nuclei
Polariton condensation with nonlinear photons
Theoretical analysis of the nonlinear omega-rho coupling parameter in a relativistic mean-field mode
Theoretical study of evaporation cross sections in the synthesis of very neutron-deficient nuclei
Coupled-channels study of fine structure in the alpha decay of well deformed nuclei
Integrability and solvability of the simplified two-qubit Rabi model
QUASI-EXACTLY ANALYTICAL SOLUTIONS OF TWO ELECTRONS IN VERTICALLY COUPLED RINGS
Systematic Calculations of alpha-Decay Half-Lives of Well Deformed Nuclei
Attempt to probe nuclear charge radii by cluster and proton emissions
Alpha-Decay Study of Unfavored Transitions in Bismuth Isotopes
Coupled-channel representation to describe fine structure in the alpha decay of odd-mass Bk isotopes
New effective interactions in improved quark mass density-dependent model with omega tensor and non-
A sub-millimeter spatial resolution achieved by a large sized glass RPC
Shell model calculations for the beta-decays of the Sn isotopic chain
Electroweak charge density distributions with parity-violating electron scattering
Application of the Bruyeres Jeukenne-Lejeune-Mahaux model potential to composite nuclei with a singl
Study of the structure of borromean nucleus 17Ne
Nuclear charge radii of heavy and superheavy nuclei from the experimental alpha-decay energies and h
Time evolution of a time-dependent inverted harmonic oscillator in arbitrary dimensions
Diffusion Monte Carlo calculations of three-body systems
双中子集团结构研究进展
原子核结团的非局域化运动
奇Z超重核的禁戒α衰变
原子核中的结团运动
非均匀磁场和杂质磁场对自旋1系统量子关联的影响
低温声腔中基于二能级系统与高频泛音相互作用引起的声学声子损失
Half-lives of double β^- -decay with two neutrinos
Knockout reaction induced by ^6He at 61.2 MeV/u
会议论文
Comparison of the coupled-channel calculation with the WKB method for alpha-decay fine structure
A new experimental study of the Be-12 cluster structure
Study on the He-8 ground state via He-8(p, d)He-7 and He-8(p, t)He-6 reaction at 82.3 MeV/nucleon
Systematic calculation of fine structure in the α decay of deformed nuclei
Coupled-channel study of fine structure in the alpha decay of U-233,U-235
Introduction to a new "973" Project: New Physics at the Limit of Nuclear Stability
Systematics of fine structure in the a decay of deformed even-even nuclei
He-8 cluster structure studied by recoil proton tagged knockout reaction
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