Suppressed electric quadrupole collectivity in Si 32
Suppressed electric quadrupole collectivity in Si 32
复制标题
Si 32 中的抑制电四极集体
DOI：
10.1103/physrevc.109.014327
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发表时间：
2024
影响因子：
3.1
通讯作者：
Heery J
中科院分区：
文献类型：
--
作者：
Heery J
介于两者之间的壳层可以用稳健的现象学和初核理论很好地描述。然而，在这项工作中，我们强调了通过亚势垒库仑激发研究的稀有同位素中电四极子强度的不明原因的降低。结果发现，变形的扁圆性质得到了很好的再现，然而，四极杆变形的绝对尺度与理论预测相比，被抑制了大约2倍。通过与壳模型和初始计算的比较，我们提出了一些可能的解释这种抑制强度。通过将这些计算结果与多个观测值进行比较，我们得出结论，空间外激励的作用减小，导致通常应用于两个模型的修正减小。
Lying betweenand, theshell is well described by robust phenomenological andab initionuclear theories. In this work, however, we highlight an unexplained reduction in electric-quadrupole strength in the rare isotope, studied through sub-barrier Coulomb excitation. It is found that the oblate nature of the deformation is well reproduced, while the absolute scale of quadrupole deformation, however, is inhibited by approximately a factor of 2 compared to theoretical predictions. Through comparison with shell-model andab initiocalculations, we present a number of possible explanations for this inhibitedstrength. By comparing the results of these calculations to multiple observables, we conclude that there is a reduced role for out-of-space excitations in, resulting in a reduction in the corrections normally applied to both models.