| Texto completo | |
| Autor(es): |
Phyu, Lai Hnin
[1]
;
Moriya, H.
[1]
;
Horiuchi, W.
[1]
;
Iida, K.
[2]
;
Noda, K.
[2]
;
Yamashita, M. T.
[3]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810 - Japan
[2] Kochi Univ, Dept Math & Phys, Kochi 7808520 - Japan
[3] Univ Estadual Paulista, Inst Fis Teor, UNESP, Rua Dr Bento Teobaldo Ferraz 271, Bloco 2, BR-01140070 Sao Paulo, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FEW-BODY SYSTEMS; v. 62, n. 3 SEP 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
The first excited J(pi) = 0(+) state of C-12, the so-called Hoyle state, plays an essential role in a triple-alpha (He-4) reaction, which is a main contributor to the synthesis of C-12 in a burning star. We investigate the Coulomb screening effects on the energy shift of the Hoyle state in a thermal plasma environment using precise three-alpha model calculations. The Coulomb screening effect between alpha clusters is taken into account within the Debye-Huckel approximation. To generalize our study, we utilize two standard alpha-cluster models, which treat the Pauli principle between the alpha particles differently. We find that the energy shift does not depend on these models and follows a simple estimation in the zero-size limit of the Hoyle state when the Coulomb screening length is as large as a value typical of such a plasma consisting of electrons and alpha particles. (AU) | |
| Processo FAPESP: | 19/00153-8 - Efeitos dimensionais na física de poucos corpos em um ambiente de muito corpos |
| Beneficiário: | Marcelo Takeshi Yamashita |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |