Coulomb excitation of Kr 80 , 82 and a change in structure approaching N = Z = 40
Coulomb excitation of Kr 80 , 82 and a change in structure approaching N = Z = 40
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Kr 80 、 82 的库仑激发以及接近 N = Z = 40 的结构变化
DOI：
10.1103/physrevc.104.044313
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发表时间：
2021
影响因子：
3.1
通讯作者：
Gillespie S
中科院分区：
文献类型：
--
作者：
Gillespie S
背景：原子核的接近被认为表现出强烈的形变结构，并被认为是形状共存的候选者。在氪同位素，其特点是，防止理解不断发展的变形approaching.Purpose：本工作的目的是确定电四极跃迁强度和四极矩的，以更好地表征他们的deformation.Methods：亚势垒库仑激发，撞击氪同位素onandtargets。利用安全库仑激发过程的半经典描述，可以确定矩阵元素。结论：测量值与实测值的比较表明，氪的缺中子（）同位素比质量区其它同位素链更接近轴向形变。这一趋势的延续可能导致Sr和Zr同位素表现出近轴长轴变形。
Background:Nuclei approachingare known to exhibit strongly deformed structures and are thought to be candidates for shape coexistence. In the krypton isotopes,are poorly characterized, preventing an understanding of evolving deformation approaching.Purpose:The present work aims to determine electric quadrupole transition strengths and quadrupole moments ofin order to better characterize their deformation.Methods:Sub-barrier Coulomb excitation was employed, impinging the isotopes of krypton onandtargets. Utilizing a semiclassical description of the safe Coulomb-excitation processmatrix elements could then be determined.Results:Eleven new or improved matrix elements are determined inand seven in. The newvalue indisagrees with the evaluated value by, which can be explained in terms of deficiencies in a previous Coulomb-excitation analysis.Conclusions:Comparison of measuredandvalues indicates that neutron-deficient () isotopes of krypton are closer to axial deformation than other isotopic chains in the mass region. A continuation of this trend to highermay result in Sr and Zr isotopes exhibiting near-axial prolate deformation.