Usuf Rahaman, M. Ikram, Ishfaq A. Rather, Anisul Ain Usmani
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引用次数: 0
Abstract
The present study focuses on investigating the shape evolution of neutron-rich even-even osmium (Os) transitional nuclei within the range of neutron number N = 82 to N = 190. The investigation is conducted using density-dependent meson-nucleon and point-coupling models within the framework of the covariant density functional theory (CDFT). Additionally, the results obtained from the CDFT calculations are compared with those obtained using the relativistic mean-field model with a nonlinear meson-nucleon interaction. The potential energy curve for Os isotopes (ranging from \(^{158}\)Os to \(^{260}\)Os) is analyzed in order to identify phase shape transitions, such as oblate-spherical-prolate. Furthermore, ground state bulk properties are calculated to gain insights into the structure of Os isotopes. The self-consistent calculations reveal a clear shape transition in the even-even Os isotopes, and overall, good agreement is observed among the different models employed as well as with the available experimental data.
本研究的重点是在中子数 N = 82 到 N = 190 的范围内研究富中子偶偶锇（Os）过渡核的形状演变。研究采用了协变密度泛函理论（CDFT）框架内的密度依赖介子-核子模型和点耦合模型。此外，还将 CDFT 计算得出的结果与使用具有非线性介子-核子相互作用的相对论均场模型得出的结果进行了比较。分析了 Os 同位素（从 \(^{158}\)Os 到 \(^{260}\)Os ）的势能曲线，以确定相形转变，如扁圆形-球形-柱状。此外，还计算了基态块体性质，以深入了解 Os 同位素的结构。自洽计算揭示了偶偶数 Os 同位素中明显的形状转变，总体而言，所采用的不同模型之间以及与现有实验数据之间都具有良好的一致性。
期刊介绍：
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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