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Nuclear structure properties of even-even chromium isotopes and the effect of deformation on calculated electron capture cross sections
Nuclear Physics A ( IF 1.7 ) Pub Date : 2020-07-13 , DOI: 10.1016/j.nuclphysa.2020.121985
Jameel-Un Nabi , Mahmut Böyükata , Asim Ullah , Muhammad Riaz

In this study, we investigate the role of the 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 were also performed to predict the geometric shape of the Cr nuclei by plotting their contour plot in the plane of (β, γ) 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 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 β parameter. The computed ECC values, however, increased with increase in the β value of the Cr isotopes.



中文翻译:

偶数铬同位素的核结构性质及其变形对计算得出的电子俘获截面的影响

在这项研究中,我们调查了核变形在偶数铬(Cr)同位素的计算电子捕获截面(ECC)中的作用。我们首先确定了相互作用的玻色子模型1(IBM-1)中这些核的核结构性质。通过拟合模型形式主义中的参数来计算能谱和E2跃迁概率。还通过在(βγ)平面上绘制等高线图来分析Cr原子核的几何形状,从而进行势能面分析)变形参数。后来,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,我们研究了计算出的ECC如何随着核变形参数的不同值而变化。计算得出的Gamow-Teller(GT)强度分布在子州之间广泛分布。GT总强度随β参数值的增加而降低。但是,计算出的ECC值会随着Cr同位素的β值的增加而增加。

更新日期:2020-07-13
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