{"title":"209Bi 靶上的 6Li (→α+d) 亚库仑破裂","authors":"","doi":"10.1016/j.nuclphysa.2024.122965","DOIUrl":null,"url":null,"abstract":"<div><div>Cross section for dissociation of <sup>6</sup>Li into <em>α</em>+<em>d</em> in the field of <sup>209</sup>Bi target nucleus has been measured at an energy about 20% below the Coulomb barrier by detecting <em>α</em> and <em>d</em> in coincidence using a segmented Si-Strip detector array. Measured distribution of relative energy ‘<span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>α</mi><mi>d</mi></mrow></msub></math></span>’ suggests that the dissociation of the projectile at present beam energy proceeds dominantly through direct breakup and by a small fraction through sequential breakup via 3<sup>+</sup> resonance state. The Q-value distribution shows that the events are accompanied by the residual target nuclei remaining at the ground state. Measured angular distributions of direct breakup cross-section are analyzed within the framework of Continuum Discretized Coupled Channel (CDCC) calculations. Asymptotic Normalization Coefficient (ANC) describing the amplitude of the tail of the bound state wave function in <em>α</em>+dis obtained from the variation of spectroscopic amplitude with the Single particle asymptotic normalization coefficient. The estimated ANC parameter (2.581 ± 0.212 fm<sup>−1/2</sup>) is in excellent agreement with the values previously found in the literature.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sub-Coulomb breakup of 6Li (→α+d) off 209Bi target\",\"authors\":\"\",\"doi\":\"10.1016/j.nuclphysa.2024.122965\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Cross section for dissociation of <sup>6</sup>Li into <em>α</em>+<em>d</em> in the field of <sup>209</sup>Bi target nucleus has been measured at an energy about 20% below the Coulomb barrier by detecting <em>α</em> and <em>d</em> in coincidence using a segmented Si-Strip detector array. Measured distribution of relative energy ‘<span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>α</mi><mi>d</mi></mrow></msub></math></span>’ suggests that the dissociation of the projectile at present beam energy proceeds dominantly through direct breakup and by a small fraction through sequential breakup via 3<sup>+</sup> resonance state. The Q-value distribution shows that the events are accompanied by the residual target nuclei remaining at the ground state. Measured angular distributions of direct breakup cross-section are analyzed within the framework of Continuum Discretized Coupled Channel (CDCC) calculations. Asymptotic Normalization Coefficient (ANC) describing the amplitude of the tail of the bound state wave function in <em>α</em>+dis obtained from the variation of spectroscopic amplitude with the Single particle asymptotic normalization coefficient. The estimated ANC parameter (2.581 ± 0.212 fm<sup>−1/2</sup>) is in excellent agreement with the values previously found in the literature.</div></div>\",\"PeriodicalId\":19246,\"journal\":{\"name\":\"Nuclear Physics A\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-09-24\",\"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/S0375947424001477\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Physics A","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375947424001477","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}
Sub-Coulomb breakup of 6Li (→α+d) off 209Bi target
Cross section for dissociation of 6Li into α+d in the field of 209Bi target nucleus has been measured at an energy about 20% below the Coulomb barrier by detecting α and d in coincidence using a segmented Si-Strip detector array. Measured distribution of relative energy ‘’ suggests that the dissociation of the projectile at present beam energy proceeds dominantly through direct breakup and by a small fraction through sequential breakup via 3+ resonance state. The Q-value distribution shows that the events are accompanied by the residual target nuclei remaining at the ground state. Measured angular distributions of direct breakup cross-section are analyzed within the framework of Continuum Discretized Coupled Channel (CDCC) calculations. Asymptotic Normalization Coefficient (ANC) describing the amplitude of the tail of the bound state wave function in α+dis obtained from the variation of spectroscopic amplitude with the Single particle asymptotic normalization coefficient. The estimated ANC parameter (2.581 ± 0.212 fm−1/2) is in excellent agreement with the values previously found in the literature.
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.