Arkabrata Gupta , Sathi Sharma , Sangeeta Das , Anik Adhikari , Anubhab Mondal , Madhusree Roy Chowdhury , Chandan D Bagdia , Lokesh Tribedi , Vandana Nanal , Abhijit Bisoi , M. Saha Sarkar , S. Sarkar
{"title":"Lifetime measurement of the Ex = 2485.3 keV level of 25Al populated through 24Mg(p,γ)25Al resonance reaction","authors":"Arkabrata Gupta , Sathi Sharma , Sangeeta Das , Anik Adhikari , Anubhab Mondal , Madhusree Roy Chowdhury , Chandan D Bagdia , Lokesh Tribedi , Vandana Nanal , Abhijit Bisoi , M. Saha Sarkar , S. Sarkar","doi":"10.1016/j.nuclphysa.2023.122806","DOIUrl":null,"url":null,"abstract":"<div><p>Results of our experimental study of the <sup>24</sup>Mg<span><math><msup><mrow><mo>(</mo><mi>p</mi><mo>,</mo><mi>γ</mi><mo>)</mo></mrow><mrow><mn>25</mn></mrow></msup></math></span>Al resonance reaction at E<span><math><mmultiscripts><mrow><mo>=</mo></mrow><mprescripts></mprescripts><mrow><mi>p</mi></mrow><mrow><mi>l</mi><mi>a</mi><mi>b</mi></mrow></mmultiscripts><mn>223</mn></math></span><span> keV are presented. The proton beam energy is varied from 220 to 265 keV. An evaporated Mg target with thick Ta backing is used. We remeasure a mean lifetime of </span><span><math><mi>τ</mi><mo>=</mo><msubsup><mrow><mn>6.04</mn></mrow><mrow><mo>−</mo><mn>2.65</mn></mrow><mrow><mo>+</mo><mn>3.03</mn></mrow></msubsup></math></span> fs for the E<span><math><mmultiscripts><mrow><mo>=</mo></mrow><mprescripts></mprescripts><mrow><mi>x</mi></mrow><none></none></mmultiscripts><mn>2485.3</mn></math></span> keV level of <sup>25</sup><span>Al, using Doppler shift attenuation (DSA) method. Three most successfully used empirical effective interactions developed for the sd shell by Wildenthal (w), Chung-Wildenthal (cw) and Preedom-Wildenthal (pw), are utilized to calculate energy spectra<span>, spectroscopic factors, beta decay properties, transition probabilities and the lifetime of the resonance state in </span></span><sup>25</sup>Al within the framework of nuclear shell model. The theoretical results agree reasonably well with the experimental data. However, a detailed study for each set to identify the most preferred interaction for this nucleus is performed. Calculated lifetimes using two of the interactions (w, cw) agree better with the central value of the experimental lifetime of the resonance state measured in the present work.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-11-29","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/S0375947423002105","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
Results of our experimental study of the 24MgAl resonance reaction at E keV are presented. The proton beam energy is varied from 220 to 265 keV. An evaporated Mg target with thick Ta backing is used. We remeasure a mean lifetime of fs for the E keV level of 25Al, using Doppler shift attenuation (DSA) method. Three most successfully used empirical effective interactions developed for the sd shell by Wildenthal (w), Chung-Wildenthal (cw) and Preedom-Wildenthal (pw), are utilized to calculate energy spectra, spectroscopic factors, beta decay properties, transition probabilities and the lifetime of the resonance state in 25Al within the framework of nuclear shell model. The theoretical results agree reasonably well with the experimental data. However, a detailed study for each set to identify the most preferred interaction for this nucleus is performed. Calculated lifetimes using two of the interactions (w, cw) agree better with the central value of the experimental lifetime of the resonance state measured in the present work.
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.