{"title":"测量伽莫夫能量下的 144Sm(p,γ)截面","authors":"Tanmoy Bar, Dipali Basak, Lalit Kumar Sahoo, Sukhendu Saha, Jagannath Datta, Sandipan Dasgupta, Chinmay Basu","doi":"10.1088/1361-6471/ad4d06","DOIUrl":null,"url":null,"abstract":"The cross-section measurement of <sup>144</sup>Sm(p, <italic toggle=\"yes\">γ</italic>)<sup>145</sup>Eu (T<sub>1/2</sub> = 5.93(4) days) reaction has been performed at proton energies around 2.6–6.8 MeV using the activation technique. Molecular deposition technique was used to prepare the <sup>144</sup>Sm targets having thickness between 100 and 350 <italic toggle=\"yes\">μ</italic>g cm<sup>−2</sup> on Al backing. The astrophysical <italic toggle=\"yes\">S</italic>-factor of this reaction has been measured for the first time at <inline-formula>\n<tex-math>\n<?CDATA ${{\\rm{E}}}_{p}^{\\mathrm{cm}}=$?>\n</tex-math>\n<mml:math overflow=\"scroll\"><mml:msubsup><mml:mi mathvariant=\"normal\">E</mml:mi><mml:mi>p</mml:mi><mml:mi>cm</mml:mi></mml:msubsup><mml:mo>=</mml:mo></mml:math>\n<inline-graphic xlink:href=\"jpgad4d06ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> 2.57 ± 0.13 MeV, <italic toggle=\"yes\">S</italic>-factor = 2.542 ± 1.152(×10<sup>10</sup>) MeV-b. Cross-section data were compared with the previously measured experimental data (2.8–7.5 MeV) from literature and the theoretical predictions obtained using Hauser-Feshbach statistical model. Obtained results were utilised to predict the reaction rates for <sup>144</sup>Sm (<italic toggle=\"yes\">p</italic>, <italic toggle=\"yes\">γ</italic>) and <sup>145</sup>Eu (<italic toggle=\"yes\">γ</italic>, <italic toggle=\"yes\">p</italic>) reactions.","PeriodicalId":16766,"journal":{"name":"Journal of Physics G: Nuclear and Particle Physics","volume":"12 1","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measurement of 144Sm(p,γ) cross-section at Gamow energies\",\"authors\":\"Tanmoy Bar, Dipali Basak, Lalit Kumar Sahoo, Sukhendu Saha, Jagannath Datta, Sandipan Dasgupta, Chinmay Basu\",\"doi\":\"10.1088/1361-6471/ad4d06\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The cross-section measurement of <sup>144</sup>Sm(p, <italic toggle=\\\"yes\\\">γ</italic>)<sup>145</sup>Eu (T<sub>1/2</sub> = 5.93(4) days) reaction has been performed at proton energies around 2.6–6.8 MeV using the activation technique. Molecular deposition technique was used to prepare the <sup>144</sup>Sm targets having thickness between 100 and 350 <italic toggle=\\\"yes\\\">μ</italic>g cm<sup>−2</sup> on Al backing. The astrophysical <italic toggle=\\\"yes\\\">S</italic>-factor of this reaction has been measured for the first time at <inline-formula>\\n<tex-math>\\n<?CDATA ${{\\\\rm{E}}}_{p}^{\\\\mathrm{cm}}=$?>\\n</tex-math>\\n<mml:math overflow=\\\"scroll\\\"><mml:msubsup><mml:mi mathvariant=\\\"normal\\\">E</mml:mi><mml:mi>p</mml:mi><mml:mi>cm</mml:mi></mml:msubsup><mml:mo>=</mml:mo></mml:math>\\n<inline-graphic xlink:href=\\\"jpgad4d06ieqn1.gif\\\" xlink:type=\\\"simple\\\"></inline-graphic>\\n</inline-formula> 2.57 ± 0.13 MeV, <italic toggle=\\\"yes\\\">S</italic>-factor = 2.542 ± 1.152(×10<sup>10</sup>) MeV-b. Cross-section data were compared with the previously measured experimental data (2.8–7.5 MeV) from literature and the theoretical predictions obtained using Hauser-Feshbach statistical model. Obtained results were utilised to predict the reaction rates for <sup>144</sup>Sm (<italic toggle=\\\"yes\\\">p</italic>, <italic toggle=\\\"yes\\\">γ</italic>) and <sup>145</sup>Eu (<italic toggle=\\\"yes\\\">γ</italic>, <italic toggle=\\\"yes\\\">p</italic>) reactions.\",\"PeriodicalId\":16766,\"journal\":{\"name\":\"Journal of Physics G: Nuclear and Particle Physics\",\"volume\":\"12 1\",\"pages\":\"\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2024-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Physics G: Nuclear and Particle Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1088/1361-6471/ad4d06\",\"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":"Journal of Physics G: Nuclear and Particle Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1361-6471/ad4d06","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}
Measurement of 144Sm(p,γ) cross-section at Gamow energies
The cross-section measurement of 144Sm(p, γ)145Eu (T1/2 = 5.93(4) days) reaction has been performed at proton energies around 2.6–6.8 MeV using the activation technique. Molecular deposition technique was used to prepare the 144Sm targets having thickness between 100 and 350 μg cm−2 on Al backing. The astrophysical S-factor of this reaction has been measured for the first time at Epcm= 2.57 ± 0.13 MeV, S-factor = 2.542 ± 1.152(×1010) MeV-b. Cross-section data were compared with the previously measured experimental data (2.8–7.5 MeV) from literature and the theoretical predictions obtained using Hauser-Feshbach statistical model. Obtained results were utilised to predict the reaction rates for 144Sm (p, γ) and 145Eu (γ, p) reactions.
期刊介绍:
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