$^{92,94}$Zr 和 $^{94}$Mo 的 ($e,e^{\prime}$) 与 ($p,p^{\prime}$) 散射中的低能集体结构 I. 实验结果
Low-energy collective structure of $^{92,94}$Zr and $^{94}$Mo from ($e,e^{\prime}$) and ($p,p^{\prime}$) scattering I. Experimental results
- Technische Universität Darmstadt（达姆施塔特工业大学）
- University of the Witwatersrand（威特沃特斯兰德大学）
- iThemba Laboratory for Accelerator Based Sciences（iThemba加速器科学实验室）
- University of Cape Town（开普敦大学）
- Osaka University（大阪大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文通过比较电子与质子非弹性散射实验，提取Zr和Mo同位素的质子与中子跃迁密度，识别四极混合对称态及双声子多重态候选，确定激发态自旋宇称。
AI中文摘要：
这是两篇系列论文中的第一篇，讨论基于非弹性电子和质子散射实验比较所得质子与中子跃迁密度，在振动核 $^{92,94}$Zr 和 $^{94}$Mo 中四极混合对称态的新特征。文中给出了这些核的 $(e,e^\prime)$ 和 $(p,p^\prime)$ 实验结果，以及其他潜在候选核 $^{96}$Mo 和 $^{70}$Zn 的 $(p,p^\prime)$ 数据。基于质子散射数据的角分布，并与采用扭曲波玻恩近似中集体模型形状因子的计算进行比较，确定了激发态的自旋和宇称量子数。识别出可能的单声子全对称态和混合对称态候选者，以及双声子多重态的成员。
英文摘要：
This is the first of two papers discussing a new signature of quadrupole mixed-symmetry states in the vibrational nuclei $^{92,94}$Zr and $^{94}$Mo based on proton and neutron transition densities derived from the comparison of inelastic electron and proton scattering experiments. Results of the $(e,e^\prime)$ and $(p,p^\prime)$ experiments on these nuclei as well as $(p,p^\prime)$ data for other potential cases $^{96}$Mo and $^{70}$Zn are presented. Spin and parity quantum numbers of excited states are assigned based on angular distributions from the proton scattering data in comparison to calculations employing form factors from the collective model in distorted-wave Born approximation. Possible candidates of one-phonon fully symmetric and mixed-symmetry states as well as members of two-phonon multiplets are identified.
