Precision Mass Measurements beyond $^{132}$Sn: Anomalous behaviour of odd-even staggering of binding energies
J. Hakala, J. Dobaczewski, D. Gorelov, T. Eronen, A. Jokinen, A. Kankainen, V. S. Kolhinen, M. Kortelainen, I. D. Moore, H. Penttilä, S. Rinta-Antila, J. Rissan… 展开作者
J. Hakala, J. Dobaczewski, D. Gorelov, T. Eronen, A. Jokinen, A. Kankainen, V. S. Kolhinen, M. Kortelainen, I. D. Moore, H. Penttilä, S. Rinta-Antila, J. Rissanen, A. Saastamoinen, V. Sonnenschein, J. Äystö
备注:
4 Pages, 5 figures. Revised version which focuses on odd-even staggering
Atomic masses of the neutron-rich isotopes $^{121-128}$Cd, $^{129,131}$In, $^{130-135}$Sn, $^{131-136}$Sb, and $^{132-140}$Te have been measured with high precision (10 ppb) using the Penning trap mass spectrometer JYFLTRAP. Among these, the masses of four r-process nuclei $^{135}$Sn, $^{136}$Sb, and $^{139,140}$Te were measured for the first time. The data reveals a strong $N$=82 shell gap at $Z$=50 but indicates the importance of correlations for $Z>50$. An empirical neutron pairing gap expressed as the odd-even staggering of isotopic masses shows a strong quenching across $N$=82 for Sn, with the $Z$-dependence that is unexplainable by the current theoretical models.
Persistence of odd-even staggering in charged fragment yields from the 112Sn+58Ni collision at 35 MeV/nucleon
本文研究了35 MeV/核子的112 Sn +58 Ni半周边和中心碰撞产生的碎片的电荷分布的奇偶交错效应。对于Z<16的碎片,观察到偶数电荷的明显过量产生,其对于较重的碎片减少。在外围碰撞中,交错效应持续到Z约40。对于轻碎片,交错似乎是基本上独立的碰撞的中心性,这表明它主要是有关的最后几个步骤,在热核衰变。
Isospin Dependence in the Odd-Even Staggering of Nuclear Binding Energies
GSI的FRS-ESR设施为在一次实验中精确测量核物质表面的大面积提供了独特的条件。得到了604个缺中子核素(30 ≤ Z ≤ 92)的质量值,典型的不确定度为30微单位。首次测定了114种核素的质量。系统地研究了Z=50和Z=82质子壳层闭合之间的同位素链的核质量奇偶交错(OES)。结果与现代核模型的预测进行了比较。比较表明,OES的测量趋势是不能复制的理论拟合的质量只。从调整到质量和密度相关的核观测量的模型中提取的光谱配对间隙与实验数据吻合得更好。
Laser spectroscopy of neutron-rich $^{207,208}$Hg isotopes: Illuminating the kink and odd-even staggering in charge radii across the $N=126$ shell closure
Puzzling Isotonic Odd-Even Staggering of Charge Radii in Deformed Rare Earth Nuclei
National Institute for Fusion Science(国立核聚变科学研究所);National Institute of Standards and Technology(国家标准与技术研究院);University of Maryland, College Park(马里兰大学帕克分校);NASA/GSFC(美国国家航空航天局格林研究中心);The University of Electro-Communications(电波大学);Clemson University(克莱姆森大学);Univ. Grenoble Alpes(格勒诺布尔阿尔卑斯大学);CEA(法国原子能和替代能源委员会);CNRS(法国国家科学研究中心);Grenoble INP(格勒诺布尔理工学院);IRIG(集成研究、信息和基因技术研究所);SyMMES(物质与分子科学研究实验室);University of Debrecen(德布勒森大学);Massachusetts Institute of Technology(麻省理工学院);Michigan State University(密歇根州立大学);Kyushu University(九州大学)
Delta I = 1 staggering in octupole bands of light actinides: "Beat" patterns
发现轻锕系元素八极带中的Δ I = 1交错(奇-偶交错)表现出作为角动量I的函数的“拍”行为,迫使我们修改传统的信念,即这种交错逐渐减小到零,然后保持在这个零值。各种代数模型(spf-相互作用玻色子模型,spdf-IBM,矢量玻色子模型,核振动模型)被证明预测在其su(3)限制恒定交错的情况下,因此无法描述的“拍”的行为。的“拍”的行为的解释是在两个邓纳姆展开(扩展在幂的I(I+1))的系数略有不同的设置为基态带和负宇称带,系数的值的差异被归因于科里奥利耦合到其他负宇称带。类似的“拍”模式已经在一些双原子分子的旋转带中看到,如AgH。
Shape staggering of mid-shell mercury isotopes from in-source laser spectroscopy compared with Density Functional Theory and Monte Carlo Shell Model calculations
The optimized point-coupling interaction for the relativistic energy density functional of Hartree-Bogoliubov approach quantifying the nuclear bulk properties
Pairing strength in the relativistic mean-field theory determined from fission barrier heights of actinide nuclei and verified by pairing rotation and binding energies