Coulomb screening correction to the Q value of the triple-alpha process in thermal plasmas

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Autor(es): dc.contributorHokkaido University-
Autor(es): dc.contributorKochi University-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorPhyu, Lai Hnin-
Autor(es): dc.creatorMoriya, H.-
Autor(es): dc.creatorHoriuchi, W.-
Autor(es): dc.creatorIida, K.-
Autor(es): dc.creatorNoda, K.-
Autor(es): dc.creatorYamashita, M. T. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:48:03Z-
Data de disponibilização: dc.date.available2022-02-22T00:48:03Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/ptep/ptaa093-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206762-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206762-
Descrição: dc.descriptionThe triple-alpha reaction is key to 12C production and is expected to occur in weakly coupled thermal plasmas as encountered in normal stars.We investigate how Coulomb screening affects the structure of a system of three alpha particles in such a plasma environment by precise threebody calculations within the Debye-Hückel approximation. A three-alpha model that has the Coulomb interaction modified in theYukawa form is employed. Precise three-body wave functions are obtained by a superposition of correlated Gaussian basis with the aid of the stochastic variational method. The energy shifts of the Hoyle state due to the Coulomb screening are obtained as a function of the Debye screening length. The results, which automatically incorporate the finite-size effect of the Hoyle state, are consistent with the conventional result based on the Coulomb correction to the chemical potentials of ions that are regarded as point charges in a weakly coupled thermal plasma. We have given a theoretical basis to the conventional pointcharge approach to the Coulomb screening problem relevant for nuclear reactions in normal stars by providing the first evaluation of the Coulomb corrections to the Q value of the triple-alpha process that produces a finite-size Hoyle state.-
Descrição: dc.descriptionDepartment of Physics Hokkaido University-
Descrição: dc.descriptionDepartment of Mathematics and Physics Kochi University-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista UNESP, Rua Dr. Bento Teobaldo Ferraz, 271 -Bloco II-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista UNESP, Rua Dr. Bento Teobaldo Ferraz, 271 -Bloco II-
Idioma: dc.languageen-
Relação: dc.relationProgress of Theoretical and Experimental Physics-
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Título: dc.titleCoulomb screening correction to the Q value of the triple-alpha process in thermal plasmas-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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