Microscopic insights into the structure of even-even 144−148Ce isotopes

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2025-05-15 DOI:10.1016/j.nuclphysa.2025.123156

Umera Nawaz , Manvi Rajput , Suram Singh , G.H. Bhat , Arun Bharti , J.A. Sheikh

{"title":"Microscopic insights into the structure of even-even 144−148Ce isotopes","authors":"Umera Nawaz , Manvi Rajput , Suram Singh , G.H. Bhat , Arun Bharti , J.A. Sheikh","doi":"10.1016/j.nuclphysa.2025.123156","DOIUrl":null,"url":null,"abstract":"<div><div>A comprehensive analysis is done to study the structural evolution and triaxial deformation in the even-even <sup>144−148</sup>Ce isotopes using Triaxial Projected Shell Model (TPSM) approach. A thorough investigation of the yrast and <em>γ</em>-band explains the shape transition and presence of gamma collectivity in these neutron rich nuclei. Various observables and phenomena like <span><math><msub><mrow><mi>R</mi></mrow><mrow><mn>4</mn><mo>/</mo><mn>2</mn></mrow></msub></math></span> ratios, odd-even staggering patterns in <em>γ</em>-bands, shape invariants, reduced transition probabilities, g-factors etc. have been calculated and found to be reasonably consistent with the available experimental data. Also, these results reveal a progressive shape evolution from <em>γ</em>-soft towards axially symmetric rotor at N=90. This study enhances our understanding of nuclear deformation mechanisms in this critical mass region by revealing the structural changes driven by multiquasiparticle configurations.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1061 ","pages":"Article 123156"},"PeriodicalIF":1.7000,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Physics A","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375947425001423","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}

引用次数: 0

Abstract

A comprehensive analysis is done to study the structural evolution and triaxial deformation in the even-even ^144−148Ce isotopes using Triaxial Projected Shell Model (TPSM) approach. A thorough investigation of the yrast and γ-band explains the shape transition and presence of gamma collectivity in these neutron rich nuclei. Various observables and phenomena like

R_{4 / 2}

ratios, odd-even staggering patterns in γ-bands, shape invariants, reduced transition probabilities, g-factors etc. have been calculated and found to be reasonably consistent with the available experimental data. Also, these results reveal a progressive shape evolution from γ-soft towards axially symmetric rotor at N=90. This study enhances our understanding of nuclear deformation mechanisms in this critical mass region by revealing the structural changes driven by multiquasiparticle configurations.

查看原文本刊更多论文

144−148Ce同位素的微观结构

采用三轴投影壳模型（TPSM）方法，对144 ~ 148Ce均匀同位素的结构演化和三轴形变进行了综合分析。对yrast和γ波段的深入研究解释了这些富中子核的形状转变和γ集体的存在。计算了R4/2比率、γ波段奇偶交错模式、形状不变量、减少的跃迁概率、g因子等各种可观测值和现象，并发现它们与现有的实验数据相当一致。结果还表明，在N=90时，转子的形状由γ-软向轴对称逐渐演化。本研究通过揭示由多准粒子构型驱动的结构变化，增强了我们对临界质量区域核变形机制的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nuclear Physics A 物理-物理：核物理

CiteScore

3.60

自引率

7.10%

发文量

113

审稿时长

61 days

期刊介绍： Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.