Meena Sharma, Manvi Rajput, Suram Singh, Arun Bharti, G. H. Bhat, J. A. Sheikh
{"title":"偶偶锶同位素在N = 50壳闭合附近的形状演化","authors":"Meena Sharma, Manvi Rajput, Suram Singh, Arun Bharti, G. H. Bhat, J. A. Sheikh","doi":"10.1140/epja/s10050-025-01585-7","DOIUrl":null,"url":null,"abstract":"<div><p>The structural properties of even-even Sr isotopes near neutron shell closure (N = 50) have been systematically studied by using Triaxial Projected Shell Model (TPSM), revealing significant variations in deformation, collectivity, and quasiparticle dynamics. Band diagram plots reveal the quaiparticle structure of these isotopes. The variation in reduced transition probabilities [B(E2)] reflects the evolution of collectivity with changes in neutron number and angular momentum, demonstrating a gradual decline near the shell closure (N = 50) and a sharp increase at N = 60, indicative of a transition to a more deformed regime. Furthermore, staggering plots and Potential Energy Surface (PES) analysis reveal a systematic shift from <span>\\(\\gamma \\)</span>-soft to <span>\\(\\gamma \\)</span>-rigid nuclear behavior as the isotopes approach the shell closure, underscoring the interplay between deformation parameters and nuclear configurations.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 5","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Shape evolution of even-even strontium isotopes near N = 50 shell closure\",\"authors\":\"Meena Sharma, Manvi Rajput, Suram Singh, Arun Bharti, G. H. Bhat, J. A. Sheikh\",\"doi\":\"10.1140/epja/s10050-025-01585-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The structural properties of even-even Sr isotopes near neutron shell closure (N = 50) have been systematically studied by using Triaxial Projected Shell Model (TPSM), revealing significant variations in deformation, collectivity, and quasiparticle dynamics. Band diagram plots reveal the quaiparticle structure of these isotopes. The variation in reduced transition probabilities [B(E2)] reflects the evolution of collectivity with changes in neutron number and angular momentum, demonstrating a gradual decline near the shell closure (N = 50) and a sharp increase at N = 60, indicative of a transition to a more deformed regime. Furthermore, staggering plots and Potential Energy Surface (PES) analysis reveal a systematic shift from <span>\\\\(\\\\gamma \\\\)</span>-soft to <span>\\\\(\\\\gamma \\\\)</span>-rigid nuclear behavior as the isotopes approach the shell closure, underscoring the interplay between deformation parameters and nuclear configurations.</p></div>\",\"PeriodicalId\":786,\"journal\":{\"name\":\"The European Physical Journal A\",\"volume\":\"61 5\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The European Physical Journal A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1140/epja/s10050-025-01585-7\",\"RegionNum\":3,\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epja/s10050-025-01585-7","RegionNum":3,"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}
Shape evolution of even-even strontium isotopes near N = 50 shell closure
The structural properties of even-even Sr isotopes near neutron shell closure (N = 50) have been systematically studied by using Triaxial Projected Shell Model (TPSM), revealing significant variations in deformation, collectivity, and quasiparticle dynamics. Band diagram plots reveal the quaiparticle structure of these isotopes. The variation in reduced transition probabilities [B(E2)] reflects the evolution of collectivity with changes in neutron number and angular momentum, demonstrating a gradual decline near the shell closure (N = 50) and a sharp increase at N = 60, indicative of a transition to a more deformed regime. Furthermore, staggering plots and Potential Energy Surface (PES) analysis reveal a systematic shift from \(\gamma \)-soft to \(\gamma \)-rigid nuclear behavior as the isotopes approach the shell closure, underscoring the interplay between deformation parameters and nuclear configurations.
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