标题： 偶-偶铬同位素的核结构特性及形变对计算电子俘获截面的影响 显示英文标题

标题： Nuclear Structure Properties of even-even Chromium Isotopes and the E ect of Deformation on Calculated Electron Capture Cross Sections

摘要： 在本研究中，我们探讨了核变形对计算得到的偶-偶铬（Cr）同位素电子捕获截面（ECC）的作用。我们首先在相互作用玻色子模型-1（IBM-1）框架内确定了这些核的核结构特性。通过拟合模型形式中的参数，计算了能级谱和E2跃迁概率。还对势能面进行了分析，通过在（beta，gamma）变形参数平面绘制等高线图来预测Cr核的几何形状。随后，我们在质子-中子准粒子随机相位近似（pn-QRPA）模型中计算了ECC。特别是，我们研究了计算得到的ECC如何随着核变形参数的不同值而变化。计算得到的伽莫夫-泰勒（GT）强度分布广泛分布在子态中。总GT强度随着beta参数值的增加而减少。然而，计算得到的ECC值随着Cr同位素的beta值增加而增加。 显示英文摘要

摘要： In this study, we investigate the role of nuclear deformation on the calculated electron capture cross section (ECC) of even-even chromium (Cr) isotopes. We first determined the nuclear structure properties of these nuclei within the interacting boson model-1 (IBM-1). The energy spectra and E2 transition probabilities were calculated by fitting the parameters in the model formalism. The analysis of the potential energy surface was also performed to predict the geometric shape of the Cr nuclei by plotting their contour plot in the plane of (beta, gamma) deformation parameters. Later, we calculated the ECC within the proton-neutron quasiparticle random phase approximation (pn-QRPA) model. In particular, we studied how the calculated ECC changed with different values of the nuclear deformation parameter. The calculated Gamow-Teller (GT) strength distributions were widely spread among the daughter states. The total GT strength decreased with increasing value of the beta parameter. The computed ECC values, however, increased with increasing beta values of the Cr isotopes.