EPJ Web of Conferences (Jan 2023)
Determination of the 3He(α, γ)7Be and 6Li(p, γ)7Be astrophysical factors down to zero energy using the asymptotic normalization coefficients
- 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.
Affiliations
- La Cognata M.
- Laboratori Nazionali del Sud INFN
- Kiss G. G.
- Institute for Nuclear Research (ATOMKI)
- Yarmukhamedov R.
- Institute of Nuclear Physics, Uzbekistan Academy of Sciences
- Tursunmakhatov K. I.
- Institute of Nuclear Physics, Uzbekistan Academy of Sciences
- Wiedenhöver I.
- Department of Physics, Florida State University, Tallahassee
- Baby L. T.
- Department of Physics, Florida State University, Tallahassee
- Cherubini S.
- Laboratori Nazionali del Sud INFN
- Cvetinović A.
- Laboratori Nazionali del Sud INFN
- D’Agata G.
- Laboratori Nazionali del Sud INFN
- Figuera P.
- Laboratori Nazionali del Sud INFN
- Guardo G.L.
- Laboratori Nazionali del Sud INFN
- Gulino M.
- Laboratori Nazionali del Sud INFN
- Hayakawa S.
- Center for Nuclear Study (CNS), University of Tokyo, RIKEN campus
- Indelicato I.
- Laboratori Nazionali del Sud INFN
- Lamia L.
- Laboratori Nazionali del Sud INFN
- Lattuada M.
- Laboratori Nazionali del Sud INFN
- Mudò F.
- Laboratori Nazionali del Sud INFN
- Palmerini S.
- Dipartimento di Fisica e Geologia, Università di Perugia
- Pizzone R.G.
- Laboratori Nazionali del Sud INFN
- Rapisarda G.G.
- Laboratori Nazionali del Sud INFN
- Romano S.
- Laboratori Nazionali del Sud INFN
- Sergi M. L.
- Laboratori Nazionali del Sud INFN
- Spartà R.
- Laboratori Nazionali del Sud INFN
- Spitaleri C.
- Laboratori Nazionali del Sud INFN
- Trippella O.
- Dipartimento di Fisica e Geologia, Università di Perugia
- Tumino A.
- Laboratori Nazionali del Sud INFN
- Anastasiou M.
- Department of Physics, Florida State University, Tallahassee
- Kuvin S. A.
- Department of Physics, Florida State University, Tallahassee
- Rijal N.
- Department of Physics, Florida State University, Tallahassee
- Schmidt B.
- Department of Physics, Florida State University, Tallahassee
- Igamov S. B.
- Institute of Nuclear Physics, Uzbekistan Academy of Sciences
- Sakuta S. B.
- National Research Center “Kurchatov Institute”
- Fülöp Zs.
- Institute for Nuclear Research (ATOMKI)
- Gyürky Gy.
- Institute for Nuclear Research (ATOMKI)
- Szücs T.
- Institute for Nuclear Research (ATOMKI)
- Halász Z.
- Institute for Nuclear Research (ATOMKI)
- Somorjai E.
- Institute for Nuclear Research (ATOMKI)
- Hons Z.
- Nuclear Physics Institute of the Czech Academy of Sciences
- Mrázek J.
- Nuclear Physics Institute of the Czech Academy of Sciences
- Tribble R. E.
- Cyclotron Institute, Texas A&M University, College Station
- Mukhamedzhanov A. M.
- Cyclotron Institute, Texas A&M University, College Station
- DOI
- https://doi.org/10.1051/epjconf/202327911001
- Journal volume & issue
-
Vol. 279
p. 11001
Abstract
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.
