最近的计算[Nilsen et al. arXiv:1212.5972]预测,在金属密度和T=12 eV下,铬(Z=24)中3s和3 p束缚态对散射光子光谱的贡献低于相应的束缚态阈值。这些共振被证明是密切相关的连续降低,在自由原子中的3D束缚态溶解成共振l=2分波的连续。由此产生的d-态共振占主导地位的贡献的束缚-自由的动态结构功能,导致预测的共振散射X射线光谱。在周期表中Ca和Mn(20 <= Z <= 25)之间的所有元素中显示出类似的共振特征。
英文摘要:
Recent calculations [Nilsen et al. arXiv:1212.5972] predict that contributions to the scattered photon spectrum from 3s and 3p bound states in chromium (Z=24) at metallic density and T=12 eV resonate below the respective bound-state thresholds. These resonances are shown to be closely related to continuum lowering, where 3d bound states in the free atom dissolve into a resonant l=2 partial wave in the continuum. The resulting d-state resonance dominates contributions to the bound-free dynamic structure function, leading to the predicted resonances in the scattered X-ray spectrum. Similar resonant features are shown to occur in all elements in the periodic table between Ca and Mn (20 <= Z <= 25).
Experimental Evidence for the Breakdown of Uniform-Electron-Gas Models in Warm Dense Aluminium
European XFEL(欧洲自由电子激光设施);University of Rostock(罗斯托克大学);Helmholtz-Zentrum Dresden-Rossendorf (HZDR)(德累斯顿-罗森多夫亥姆霍兹中心);Center for Advanced Systems Understanding (CASUS)(先进系统理解中心);Osaka University(大阪大学);European Synchrotron Radiation Facility (ESRF)(欧洲同步辐射装置)
Monte-Carlo Event Generation for X-Ray Thomson Scattering Analysis
Center for Advanced Systems Understanding (CASUS)(高级系统理解中心);Helmholtz-Zentrum Dresden-Rossendorf (HZDR)(德累斯顿-罗斯多夫亥姆霍兹中心);Institut für Physik, Universität Rostock(罗斯托克大学物理研究所)
\textit{Ab Initio} Path Integral Monte Carlo Results for the Dynamic Structure Factor of Correlated Electrons: From the Electron Liquid to Warm Dense Matter
X-Ray Diagnostics Analysis Verification and Exploration (xDAVE) Code for the Prediction and Interpretation of X-Ray Thomson Scattering Experiments
Center for Advanced Systems Understanding (CASUS), Helmholtz-Zentrum Dresden-Rossendorf (HZDR)(系统理解先进中心,德累斯顿-罗斯多夫亥姆霍兹中心);Institut für Physik, Universität Rostock(罗斯托克大学物理研究所);First Light Fusion Ltd.(第一束聚变有限公司);Lawrence Livermore National Laboratory (LLNL)(劳伦斯利弗莫尔国家实验室);Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf (HZDR)(辐射物理研究所,德累斯顿-罗斯多夫亥姆霍兹中心);SLAC National Accelerator Laboratory, Stanford University(斯坦福直线加速器中心,斯坦福大学);Physics Department, Stanford University(斯坦福大学物理系);Centre for Fusion, Space and Astrophysics, University of Warwick(沃里克大学聚变、太空与天体物理学中心)
Correlation function metrology for warm dense matter: Recent developments and practical guidelines
Lawrence Livermore National Laboratory(劳伦斯利弗莫尔国家实验室);Stanford University(斯坦福大学);SLAC National Accelerator Laboratory(SLAC国家加速器实验室);Center for Advanced Systems Understanding(先进系统理解中心);Helmholtz-Zentrum Dresden-Rossendorf(德累斯顿-罗斯多夫亥姆霍兹中心);Institut für Physik, Universität Rostock(罗斯托克大学物理研究所)
Kinetic energy from the cubic sum rule of the dynamic structure factor
Royal Institute of Technology (KTH)(皇家理工学院);Helmholtz-Zentrum Dresden-Rossendorf (HZDR)(德累斯顿-罗斯多夫亥姆霍兹中心);Center for Advanced Systems Understanding (CASUS)(先进系统理解中心);Technische Universität Dresden(德累斯顿工业大学);Lawrence Livermore National Laboratory (LLNL)(劳伦斯利弗莫尔国家实验室)