论文标题
在$^{208} $ pb中访问侏儒偶极共振的单粒子结构
Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in $^{208}$Pb
论文作者
论文摘要
介绍了有关$^{208} $ pb中侏儒偶极子共振（PDR）的中子单粒子特征的新实验数据。它们是从$（d，p）$和在德国Garching的Maier-Leibnitz实验室的Q3D光谱仪进行的（D，P）$中获得的。将新数据与可用于$^{208} $ pb的大型互补的实验数据进行了比较，并建立$（d，p）$，作为一个额外的，有价值的实验探测器，以研究PDR及其集体。除了状态的单粒子特征外，还讨论了强度分布的不同特征，并将其与大型壳模式（LSSM）和能量密度函数（EDF）加上Quasiparticle-Phonon模型（QPM）理论方法进行比较，以阐明PDR在$^{208} $ pb中的显微镜结构。
New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in $^{208}$Pb are presented. They were obtained from $(d,p)$ and resonant proton scattering experiments performed at the Q3D spectrograph of the Maier-Leibnitz Laboratory in Garching, Germany. The new data are compared to the large suite of complementary, experimental data available for $^{208}$Pb and establish $(d,p)$ as an additional, valuable, experimental probe to study the PDR and its collectivity. Besides the single-particle character of the states, different features of the strength distributions are discussed and compared to Large-Scale-Shell-Model (LSSM) and energy-density functional (EDF) plus Quasiparticle-Phonon Model (QPM) theoretical approaches to elucidate the microscopic structure of the PDR in $^{208}$Pb.
