Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance
The astrophysical S factor and reaction rate of the direct capture process a+d?Li6+?, as well as the abundance of the Li6 element, are estimated in a three-body model. The initial state is factorized into the deuteron bound state and the a+d scattering state. The final nucleus Li6(1+) is described a...
| Main Authors: | , , , |
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| Format: | Journal Article |
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The American Physical Society
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/74653 |
| _version_ | 1848763335533658112 |
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| author | Tursunov, E. Turakulov, S. Kadyrov, Alisher Bray, Igor |
| author_facet | Tursunov, E. Turakulov, S. Kadyrov, Alisher Bray, Igor |
| author_sort | Tursunov, E. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The astrophysical S factor and reaction rate of the direct capture process a+d?Li6+?, as well as the abundance of the Li6 element, are estimated in a three-body model. The initial state is factorized into the deuteron bound state and the a+d scattering state. The final nucleus Li6(1+) is described as a three-body bound state a+n+p in the hyperspherical Lagrange-mesh method. Corrections to the asymptotics of the overlap integral in the S and D waves have been done for the E2 S factor. The isospin forbidden E1 S factor is calculated from the initial isosinglet states to the small isotriplet components of the final Li6(1+) bound state. It is shown that the three-body model is able to reproduce the newest experimental data of the LUNA Collaboration for the astrophysical S factor and the reaction rates within the experimental error bars. The estimated Li6/H abundance ratio of (0.67±0.01)×10-14 is in a very good agreement with the recent measurement (0.80±0.18)×10-14 of the LUNA Collaboration. |
| first_indexed | 2025-11-14T11:01:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-74653 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:01:50Z |
| publishDate | 2018 |
| publisher | The American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-746532019-08-27T04:44:24Z Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance Tursunov, E. Turakulov, S. Kadyrov, Alisher Bray, Igor The astrophysical S factor and reaction rate of the direct capture process a+d?Li6+?, as well as the abundance of the Li6 element, are estimated in a three-body model. The initial state is factorized into the deuteron bound state and the a+d scattering state. The final nucleus Li6(1+) is described as a three-body bound state a+n+p in the hyperspherical Lagrange-mesh method. Corrections to the asymptotics of the overlap integral in the S and D waves have been done for the E2 S factor. The isospin forbidden E1 S factor is calculated from the initial isosinglet states to the small isotriplet components of the final Li6(1+) bound state. It is shown that the three-body model is able to reproduce the newest experimental data of the LUNA Collaboration for the astrophysical S factor and the reaction rates within the experimental error bars. The estimated Li6/H abundance ratio of (0.67±0.01)×10-14 is in a very good agreement with the recent measurement (0.80±0.18)×10-14 of the LUNA Collaboration. 2018 Journal Article http://hdl.handle.net/20.500.11937/74653 10.1103/PhysRevC.98.055803 The American Physical Society restricted |
| spellingShingle | Tursunov, E. Turakulov, S. Kadyrov, Alisher Bray, Igor Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title | Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title_full | Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title_fullStr | Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title_full_unstemmed | Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title_short | Theoretical study of the α+d→6Li+γ astrophysical capture process in a three-body model. II. Reaction rates and primordial abundance |
| title_sort | theoretical study of the α+d→6li+γ astrophysical capture process in a three-body model. ii. reaction rates and primordial abundance |
| url | http://hdl.handle.net/20.500.11937/74653 |