Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients
The p - p-chain reaction 3He(α, γ)7Be can sensitively influence the prediction of the 7Be and 8B neutrino fluxes. Despite its importance, the knowledge of its reaction cross section at energies of the core of the Sun (15 keV 30 keV) is limited and the accuracy far from the desired 3% level. In the p...
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/05/epjconf_npa-x2023_11001.pdf |
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| author | La Cognata M. Kiss G. G. Yarmukhamedov R. Tursunmakhatov K. I. Wiedenhöver I. Baby L. T. Cherubini S. Cvetinović A. D’Agata G. Figuera P. Guardo G.L. Gulino M. Hayakawa S. Indelicato I. Lamia L. Lattuada M. Mudò F. Palmerini S. Pizzone R.G. Rapisarda G.G. Romano S. Sergi M. L. Spartà R. Spitaleri C. Trippella O. Tumino A. Anastasiou M. Kuvin S. A. Rijal N. Schmidt B. Igamov S. B. Sakuta S. B. Fülöp Zs. Gyürky Gy. Szücs T. Halász Z. Somorjai E. Hons Z. Mrázek J. Tribble R. E. Mukhamedzhanov A. M. |
| author_facet | La Cognata M. Kiss G. G. Yarmukhamedov R. Tursunmakhatov K. I. Wiedenhöver I. Baby L. T. Cherubini S. Cvetinović A. D’Agata G. Figuera P. Guardo G.L. Gulino M. Hayakawa S. Indelicato I. Lamia L. Lattuada M. Mudò F. Palmerini S. Pizzone R.G. Rapisarda G.G. Romano S. Sergi M. L. Spartà R. Spitaleri C. Trippella O. Tumino A. Anastasiou M. Kuvin S. A. Rijal N. Schmidt B. Igamov S. B. Sakuta S. B. Fülöp Zs. Gyürky Gy. Szücs T. Halász Z. Somorjai E. Hons Z. Mrázek J. Tribble R. E. Mukhamedzhanov A. M. |
| author_sort | La Cognata M. |
| collection | DOAJ |
| description | The p - p-chain reaction 3He(α, γ)7Be can sensitively influence the prediction of the 7Be and 8B neutrino fluxes. Despite its importance, the knowledge of its reaction cross section at energies of the core of the Sun (15 keV 30 keV) is limited and the accuracy far from the desired 3% level. In the present paper the indirect measurement of the external capture contribution using the asymptotic normalization coefficient (ANC) technique is reported. The angular distributions of deuterons emitted in the 6Li(3He,d)7Be α-transfer reactions were measured and the ANCs extracted from the scaling of distorted-wave Born approximation (DWBA) and coupled-channel (CC) calculations. Then, the astrophysical S-factor for the 3He(α, γ)7Be reaction was calculated assuming E1 direct capture and the zero energy value turned out to be 0.534 0.025 keVb. Both our experimental and theoretical approaches were benchmarked through the analysis of the 6Li(p,γ)7Be astrophysical factor, with interesting astrophysical applications to the understanding of the primordial lithium problem. In particular, the present work disfavors the occurrence of a claimed 200 keV resonance in the astrophysical factor. |
| first_indexed | 2024-04-09T19:05:36Z |
| format | Article |
| id | doaj.art-35441615cd0c4307a522d4b4a7dbca39 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-09T19:05:36Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-35441615cd0c4307a522d4b4a7dbca392023-04-07T09:02:03ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012791100110.1051/epjconf/202327911001epjconf_npa-x2023_11001Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficientsLa Cognata M.0Kiss G. G.1Yarmukhamedov R.2Tursunmakhatov K. I.3Wiedenhöver I.4Baby L. T.5Cherubini S.6Cvetinović A.7D’Agata G.8Figuera P.9Guardo G.L.10Gulino M.11Hayakawa S.12Indelicato I.13Lamia L.14Lattuada M.15Mudò F.16Palmerini S.17Pizzone R.G.18Rapisarda G.G.19Romano S.20Sergi M. L.21Spartà R.22Spitaleri C.23Trippella O.24Tumino A.25Anastasiou M.26Kuvin S. A.27Rijal N.28Schmidt B.29Igamov S. B.30Sakuta S. B.31Fülöp Zs.32Gyürky Gy.33Szücs T.34Halász Z.35Somorjai E.36Hons Z.37Mrázek J.38Tribble R. E.39Mukhamedzhanov A. M.40Laboratori Nazionali del Sud INFNInstitute for Nuclear Research (ATOMKI)Institute of Nuclear Physics, Uzbekistan Academy of SciencesInstitute of Nuclear Physics, Uzbekistan Academy of SciencesDepartment of Physics, Florida State University, TallahasseeDepartment of Physics, Florida State University, TallahasseeLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNCenter for Nuclear Study (CNS), University of Tokyo, RIKEN campusLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNDipartimento di Fisica e Geologia, Università di PerugiaLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNLaboratori Nazionali del Sud INFNDipartimento di Fisica e Geologia, Università di PerugiaLaboratori Nazionali del Sud INFNDepartment of Physics, Florida State University, TallahasseeDepartment of Physics, Florida State University, TallahasseeDepartment of Physics, Florida State University, TallahasseeDepartment of Physics, Florida State University, TallahasseeInstitute of Nuclear Physics, Uzbekistan Academy of SciencesNational Research Center “Kurchatov Institute”Institute for Nuclear Research (ATOMKI)Institute for Nuclear Research (ATOMKI)Institute for Nuclear Research (ATOMKI)Institute for Nuclear Research (ATOMKI)Institute for Nuclear Research (ATOMKI)Nuclear Physics Institute of the Czech Academy of SciencesNuclear Physics Institute of the Czech Academy of SciencesCyclotron Institute, Texas A&M University, College StationCyclotron Institute, Texas A&M University, College StationThe p - p-chain reaction 3He(α, γ)7Be can sensitively influence the prediction of the 7Be and 8B neutrino fluxes. Despite its importance, the knowledge of its reaction cross section at energies of the core of the Sun (15 keV 30 keV) is limited and the accuracy far from the desired 3% level. In the present paper the indirect measurement of the external capture contribution using the asymptotic normalization coefficient (ANC) technique is reported. The angular distributions of deuterons emitted in the 6Li(3He,d)7Be α-transfer reactions were measured and the ANCs extracted from the scaling of distorted-wave Born approximation (DWBA) and coupled-channel (CC) calculations. Then, the astrophysical S-factor for the 3He(α, γ)7Be reaction was calculated assuming E1 direct capture and the zero energy value turned out to be 0.534 0.025 keVb. Both our experimental and theoretical approaches were benchmarked through the analysis of the 6Li(p,γ)7Be astrophysical factor, with interesting astrophysical applications to the understanding of the primordial lithium problem. In particular, the present work disfavors the occurrence of a claimed 200 keV resonance in the astrophysical factor.https://www.epj-conferences.org/articles/epjconf/pdf/2023/05/epjconf_npa-x2023_11001.pdf |
| spellingShingle | La Cognata M. Kiss G. G. Yarmukhamedov R. Tursunmakhatov K. I. Wiedenhöver I. Baby L. T. Cherubini S. Cvetinović A. D’Agata G. Figuera P. Guardo G.L. Gulino M. Hayakawa S. Indelicato I. Lamia L. Lattuada M. Mudò F. Palmerini S. Pizzone R.G. Rapisarda G.G. Romano S. Sergi M. L. Spartà R. Spitaleri C. Trippella O. Tumino A. Anastasiou M. Kuvin S. A. Rijal N. Schmidt B. Igamov S. B. Sakuta S. B. Fülöp Zs. Gyürky Gy. Szücs T. Halász Z. Somorjai E. Hons Z. Mrázek J. Tribble R. E. Mukhamedzhanov A. M. Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients EPJ Web of Conferences |
| title | Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| title_full | Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| title_fullStr | Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| title_full_unstemmed | Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| title_short | Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| title_sort | determination of the 3he α γ 7be and 6li p γ 7be astrophysical factors down to zero energy using the asymptotic normalization coefficients |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/05/epjconf_npa-x2023_11001.pdf |
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