D.D. Burdeinyi , V.B. Ganenko , J.R.M. Annand , R. Al Jebali , K. Hansen , K. Fissum , J. Brudvik , L. Isaksson , K. Livingston , B. Nilsson , B. Schroder
{"title":"用能量为 40-65 兆电子伏的偏振光子研究 C12(γ→,p)11B 反应","authors":"D.D. Burdeinyi , V.B. Ganenko , J.R.M. Annand , R. Al Jebali , K. Hansen , K. Fissum , J. Brudvik , L. Isaksson , K. Livingston , B. Nilsson , B. Schroder","doi":"10.1016/j.nuclphysa.2024.122891","DOIUrl":null,"url":null,"abstract":"<div><p>The photon beam asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> and <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reactions has been measured in the energy range 40–65 MeV, using a tagged, linearly-polarized photon beam at the MAX-lab facility in Sweden. The asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to ground and first excited state of <span><math><mmultiscripts><mrow><mi>B</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>11</mn></mrow></mmultiscripts></math></span> is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.82</mn></math></span> over the measured energy range. The main contribution to the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to higher excited states comes from processes in which the residual nucleus is in the <span><math><mn>3</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(5.02<!--> <!-->MeV) or <span><math><mn>7</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(6.74<!--> <!-->MeV) excited states. The asymmetry of this reaction is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.6</mn></math></span>, close to the value for free deuteron photodisintegration.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1048 ","pages":"Article 122891"},"PeriodicalIF":1.7000,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of C12(γ→,p)11B reactions with polarized photons at energy 40-65 MeV\",\"authors\":\"D.D. Burdeinyi , V.B. Ganenko , J.R.M. Annand , R. Al Jebali , K. Hansen , K. Fissum , J. Brudvik , L. Isaksson , K. Livingston , B. Nilsson , B. Schroder\",\"doi\":\"10.1016/j.nuclphysa.2024.122891\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The photon beam asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> and <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reactions has been measured in the energy range 40–65 MeV, using a tagged, linearly-polarized photon beam at the MAX-lab facility in Sweden. The asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to ground and first excited state of <span><math><mmultiscripts><mrow><mi>B</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>11</mn></mrow></mmultiscripts></math></span> is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.82</mn></math></span> over the measured energy range. The main contribution to the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to higher excited states comes from processes in which the residual nucleus is in the <span><math><mn>3</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(5.02<!--> <!-->MeV) or <span><math><mn>7</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(6.74<!--> <!-->MeV) excited states. The asymmetry of this reaction is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.6</mn></math></span>, close to the value for free deuteron photodisintegration.</p></div>\",\"PeriodicalId\":19246,\"journal\":{\"name\":\"Nuclear Physics A\",\"volume\":\"1048 \",\"pages\":\"Article 122891\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-05-07\",\"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/S0375947424000733\",\"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/S0375947424000733","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}
Study of C12(γ→,p)11B reactions with polarized photons at energy 40-65 MeV
The photon beam asymmetry of the and reactions has been measured in the energy range 40–65 MeV, using a tagged, linearly-polarized photon beam at the MAX-lab facility in Sweden. The asymmetry of the reaction to ground and first excited state of is over the measured energy range. The main contribution to the reaction to higher excited states comes from processes in which the residual nucleus is in the (5.02 MeV) or (6.74 MeV) excited states. The asymmetry of this reaction is , close to the value for free deuteron photodisintegration.
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.
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