论文标题
$β$衰减和GE中低洼结构的演变和核
$β$ decay and evolution of low-lying structure in Ge and As nuclei
论文作者
论文摘要
同时计算低洼状态的形状演化和相关光谱特性，以及均值和奇数质量ge中的$β$ - decay属性，以及质量$ a \ 70-80 $区域的核，在核密度函数理论和粒子核心核心方案的框架内，属于质量$ a \ 70-80 $区域。使用通用能量密度函数（EDF）和配对相互作用的约束自洽的平均场计算决定了均匀的核心核的相互作用 - 玻色子核心，以及奇数核子系统的粒子玻璃体相互作用的必要成分，以及gamow-teller和gamow-teller和fermi and Fermi和Fermi的过渡器。 $γ$ -soft的快速结构演变不得不划分形状，以及中子子壳闭合$ n = 40 $周围的球形圆形形状共存，建议发生在均匀的GE核中。预测的低能光谱，电磁过渡速率和$β$ -Decay $ \ log {ft} $值与实验达成了合理的一致性。预测的$ \ log {ft} $值反映了$β$衰变的初始和最终核的波函数的结构，这在很大程度上由基础EDF计算提供的显微镜输入确定。
A simultaneous calculation for the shape evolution and the related spectroscopic properties of the low-lying states, and the $β$-decay properties in the even- and odd-mass Ge and As nuclei in the mass $A\approx70-80$ region, within the framework of the nuclear density functional theory and the particle-core coupling scheme, is presented. The constrained self-consistent mean-field calculations using a universal energy density functional (EDF) and a pairing interaction determines the interacting-boson Hamiltonian for the even-even core nuclei, and the essential ingredients of the particle-boson interactions for the odd-nucleon systems, and of the Gamow-Teller and Fermi transition operators. A rapid structural evolution from $γ$-soft oblate to prolate shapes, as well as the spherical-oblate shape coexistence around the neutron sub-shell closure $N=40$, is suggested to occur in the even-even Ge nuclei. The predicted low-energy spectra, electromagnetic transition rates, and $β$-decay $\log{ft}$ values are in a reasonable agreement with experiment. The predicted $\log{ft}$ values reflect the structures of the wave functions for the initial and final nuclei of $β$ decay, which are, to a large extent, determined by the microscopic input provided by the underlying EDF calculation.
