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Disentangling single-particle and collective signatures in C(p,2p) B reaction

E. Cravo (Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, Portugal; Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, Portugal) ; R. Crespo (Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, Lisboa, Portugal; Centro de Ciências e Tecnologias Nucleares, Universidade de Lisboa, Estrada Nacional 10, Bobadela, Portugal; Centro de Física e Engenharia de Materiais Avançados, Universidade de Lisboa, Av. Rovisco Pais 1, Lisboa, Portugal) ; A. Deltuva (Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio al. 3, Vilnius, Lithuania) ; D. Jurčiukonis (Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio al. 3, Vilnius, Lithuania)

We calculate kinematically fully exclusive cross sections for the 12C(p,2p)11B reaction at Ep=98.7 MeV proton beam energy, leading to the low-lying states of 11B. We use rigorous three-particle scattering framework extended to include simultaneously and consistently both core excitation and single-particle-like excitations. This predicts significant cross sections for the transitions to the final 52 (4.45 MeV) and 72 (6.74 MeV) excited states that cannot be populated through the direct single-particle excitation mechanism. We show that these two types of excitations manifest themselves with distinct and characteristic features in the scattering observables.

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      "email": "raquel.crespo@tecnico.ulisboa.pt"
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    {
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          "country": "Lithuania", 
          "value": "Institute of Theoretical Physics and Astronomy, Vilnius University, Saul\u0117tekio al. 3, Vilnius, Lithuania"
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      "surname": "Deltuva", 
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      "title": "Disentangling single-particle and collective signatures in C(p,2p) B reaction"
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      "value": "We calculate kinematically fully exclusive cross sections for the $^{12}$C(p,2p)$^{11}$B reaction at <math><msub><mrow><mi>E</mi></mrow><mrow><mi>p</mi></mrow></msub><mo>=</mo><mn>98.7</mn></math> MeV proton beam energy, leading to the low-lying states of $^{11}$B. We use rigorous three-particle scattering framework extended to include simultaneously and consistently both core excitation and single-particle-like excitations. This predicts significant cross sections for the transitions to the final <math><msup><mrow><mfrac><mrow><mn>5</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mrow><mrow><mo>\u2212</mo></mrow></msup></math> (4.45 MeV) and <math><msup><mrow><mfrac><mrow><mn>7</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mrow><mrow><mo>\u2212</mo></mrow></msup></math> (6.74 MeV) excited states that cannot be populated through the direct single-particle excitation mechanism. We show that these two types of excitations manifest themselves with distinct and characteristic features in the scattering observables."
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Published on:
10 January 2025
Publisher:
Elsevier
Published in:
Physics Letters B , Volume 861 C (2025)

Article ID: 139253
DOI:
https://doi.org/10.1016/j.physletb.2025.139253
Copyrights:
The Author(s)
Licence:
CC-BY-3.0

Fulltext files: