{"title":"8He+4He 散射和共振行为的耦合通道分析","authors":"Y. Kucuk , N. Keeley , M. Freer , I. Boztosun","doi":"10.1016/j.physletb.2024.138955","DOIUrl":null,"url":null,"abstract":"<div><p>Previously measured elastic scattering and two-neutron transfer angular distributions for <sup>8</sup>He scattered from a <sup>4</sup>He target [Phys Lett. B 75, 58-62, 2017] are analysed using the coupled reaction channels (CRC) formalism and the effect of 1, 2 and 4-neutron transfers on both the elastic scattering and <sup>6</sup>He + <sup>6</sup>He channels is examined. The CRC calculations find that 1<em>n</em> and 2<em>n</em> transfers are the dominant processes in the production of <sup>6</sup>He while the influence on the elastic scattering of 4<em>n</em> transfer between the <sup>4</sup>He cores is small. Calculated excitation functions based on fits to both data sets suggest resonant-like behaviour centred at <sup>12</sup>Be excitation energies of about 13 MeV and 14-16 MeV, both associated with the <span><math><mi>L</mi><mo>=</mo><mn>2</mn></math></span> and 4 partial waves and consistent with molecular structures in the intermediate <sup>12</sup>Be system.</p></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"856 ","pages":"Article 138955"},"PeriodicalIF":4.3000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0370269324005136/pdfft?md5=74563cc8fd5bf639b07cf01540933f58&pid=1-s2.0-S0370269324005136-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Coupled channels analysis of 8He+4He scattering and resonant behaviour\",\"authors\":\"Y. Kucuk , N. Keeley , M. Freer , I. Boztosun\",\"doi\":\"10.1016/j.physletb.2024.138955\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Previously measured elastic scattering and two-neutron transfer angular distributions for <sup>8</sup>He scattered from a <sup>4</sup>He target [Phys Lett. B 75, 58-62, 2017] are analysed using the coupled reaction channels (CRC) formalism and the effect of 1, 2 and 4-neutron transfers on both the elastic scattering and <sup>6</sup>He + <sup>6</sup>He channels is examined. The CRC calculations find that 1<em>n</em> and 2<em>n</em> transfers are the dominant processes in the production of <sup>6</sup>He while the influence on the elastic scattering of 4<em>n</em> transfer between the <sup>4</sup>He cores is small. Calculated excitation functions based on fits to both data sets suggest resonant-like behaviour centred at <sup>12</sup>Be excitation energies of about 13 MeV and 14-16 MeV, both associated with the <span><math><mi>L</mi><mo>=</mo><mn>2</mn></math></span> and 4 partial waves and consistent with molecular structures in the intermediate <sup>12</sup>Be system.</p></div>\",\"PeriodicalId\":20162,\"journal\":{\"name\":\"Physics Letters B\",\"volume\":\"856 \",\"pages\":\"Article 138955\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005136/pdfft?md5=74563cc8fd5bf639b07cf01540933f58&pid=1-s2.0-S0370269324005136-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics Letters B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005136\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics Letters B","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0370269324005136","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Coupled channels analysis of 8He+4He scattering and resonant behaviour
Previously measured elastic scattering and two-neutron transfer angular distributions for 8He scattered from a 4He target [Phys Lett. B 75, 58-62, 2017] are analysed using the coupled reaction channels (CRC) formalism and the effect of 1, 2 and 4-neutron transfers on both the elastic scattering and 6He + 6He channels is examined. The CRC calculations find that 1n and 2n transfers are the dominant processes in the production of 6He while the influence on the elastic scattering of 4n transfer between the 4He cores is small. Calculated excitation functions based on fits to both data sets suggest resonant-like behaviour centred at 12Be excitation energies of about 13 MeV and 14-16 MeV, both associated with the and 4 partial waves and consistent with molecular structures in the intermediate 12Be system.
期刊介绍:
Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.