最富中子碳同位素的单中子和双中子去除反应

400 MeV/u碳在厚铅靶上溅射反应的中子活化产额研究

The study of neutron activation yields in spallation reaction of 400 MeV/u carbon on a thick lead target

用400 MeV/u碳束轰击厚铅靶，实验研究了溅射中子产额。数据是用Au、Mn、Al、Fe和In箔的活化分析法获得的。通过对辐照箔的γ能谱测量分析，推测了产生同位素的产额。根据同位素产额，讨论了中子场的空间分布和能量分布。实验结果与GEANT 4 + FLUKA程序的蒙特卡罗模拟进行了比较。

碳和氧同位素的从头计算：能量、关联和超流配对

Ab Initio Calculations of the Carbon and Oxygen Isotopes: Energies, Correlations, and Superfluid Pairing

本文通过高保真 chiral 互作用对中子富集的碳和氧同位素进行从头计算，研究了核子关联和超流配对特性。

重核碳同位素在轻靶上的碎片化研究：27.5 MeV/nucleon

Fragmentation of neutron-rich carbon isotopes on light targets at 27.5 MeV/nucleon

本研究通过实验和理论分析，探讨了富中子碳同位素在轻靶上的碎片化过程，发现HIPSE-SIMON模型在碳靶反应中存在偏差，需进一步优化，同时讨论了碎片化机制对重构轻核聚集体共振结构方法的影响。

Single-nucleon removal cross sections on nucleon and nuclear targets

The eikonal direct-reaction model, as used in spectroscopic studies of intermediate-energy nucleon-removal reactions on light target nuclei, is considered in the case of a proton target and applied to neutron removal from $^{29}$Ne at 240 MeV/nucleon. The computed cross sections and their sensitivities are compared using an earlier detailed analysis of carbon target data. The nuclear structure input, for the $^{29}$Ne ground-state and $^{28}$Ne final states, is that deduced from the carbon target analysis. The comparisons quantify the sensitivity of the two reactions to the angular momenta and…

IQMD+GEMINI模型中单质子移除反应的研究——以~230 MeV/核子下碳靶上$^{29-33}\mathrm{Si}$的元素碎裂截面为基准

Single-proton removal reaction in the IQMD+GEMINI model benchmarked by elemental fragmentation cross sections of $^{29-33}\mathrm{Si}$ on carbon at $\sim$230~MeV/nucleon

该研究首次测量了~230 MeV/核子下$^{29-33}\mathrm{Si}$在碳靶上的元素碎裂截面，并用IQMD+GEMINI模型成功再现数据，揭示了单质子移除反应中直接敲出与蒸发机制的竞争关系及其对同位素中子数的依赖性。

Nuclear matter distributions in the neutron-rich carbon isotopes $^{14-17}$C from intermediate-energy proton elastic scattering in inverse kinematics

The absolute differential cross sections for small-angle proton elastic scattering off the nuclei $^{12,14-17}$C have been measured in inverse kinematics at energies near 700 MeV/u at GSI Darmstadt. The hydrogen-filled ionization chamber IKAR served simultaneously as a gas target and a detector for the recoil protons. The projectile scattering angles were measured with multi-wire tracking detectors. The radial nuclear matter density distributions and the root-mean-square nuclear matter radii were deduced from the measured cross sections using the Glauber multiple-scattering theory. A possible …

$N=20-28$在奇质量K、Cl和P同位素中$E(1/2^+_1)-E(3/2^+_1)$能隙的演化

Evolution of the $E(1/2^+_1)-E(3/2^+_1)$ energy spacing in odd-mass K, Cl and P isotopes for $N=20-28$

通过质子去除后的束内γ射线能谱，确定了富中子N=28核45 Cl的第一激发态的能量。这个能量值完成了N=20-28的奇质量K、Cl和P同位素的E（1/2^+1）-E（3/2^+1）能级间距的系统学。在sd-fp模型空间的壳模型计算的框架中讨论了结果。从G-矩阵和π + ρ介子交换势的质子单空穴谱计算的基础上，讨论了中心，自旋轨道和张量分量的贡献。本文提出了一个质子0 d_{3/2}-1 s_{1/2}单粒子能移的复合模型。

Evidence for Z=6 `magic number' in neutron-rich carbon isotopes

The nuclear shell structure, which originates in the nearly independent motion of nucleons in an average potential, provides an important guide for our understanding of nuclear structure and the underlying nuclear forces. Its most remarkable fingerprint is the existence of the so-called `magic numbers' of protons and neutrons associated with extra stability. Although the introduction of a phenomenological spin-orbit (SO) coupling force in 1949 helped explain the nuclear magic numbers, its origins are still open questions. Here, we present experimental evidence for the smallest SO-originated ma…

中能下从$^{73,75}$Br到$^{72,74}$Se的质子移除

Proton removal from $^{73,75}$Br to $^{72,74}$Se at intermediate energies

利用GRETINA+S800装置测量了从$^{73,75}$Br到$^{72,74}$Se的质子移除反应，发现包含截面相同，且多步过程及多种角动量转移对激发态布居有重要贡献。

N=82幻数以上丰中子Sn同位素的反常配对振动

Anomalous pairing vibration in neutron-rich Sn isotopes beyond the N=82 magic number

研究了超流丰中子核中与对关联有关的双中子转移，重点研究了N=82幻数以上Sn同位素的低激发态$0^+$.我们描述微观上的两个中子添加和删除跃迁的Skyrme-Hartree-Fock-Bogoliubov平均场模型和连续准粒子随机相位近似制定的坐标空间表示。结果表明，对于含$A \ge 140$的同位素，基态间跃迁的对转移强度明显增大，反映出很小的中子分离能和弱束缚$3p$轨道的长尾.在$^{132-140}$ Sn中，在向低激发态$0^+$的跃迁中看到对转移的特有特征。它们可以被看作是一种新的对振动模，其特征是跃迁密度的尾部非常长，延伸到核表面之外，并且具有与基态跃迁相当的强度。弱束缚中子轨道的存在对这些异常行为起着核心作用。