Study of the \(^7\)Be(\(d\),\(^3\)He)\(^6\)Li reaction at 5 MeV/u

• Published in: arXiv.org 2024-05
• Main Authors: Ali, Sk M, Gupta, D, Kundalia, K, Maity, S, Saha, Swapan K, Tengblad, O, Ovejas, J D, Perea, A, Martel, I, Cederkall, J, Park, J, Moro, A M
• Format: Article
• Language: English
• Subjects: Big bang cosmology; Lithium; Nuclear cross sections; Nuclear fusion; Nuclei (nuclear physics)
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2405.02892

The measurement of the \(^7\)Be(\(d\),\(^3\)He)\(^6\)Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of \(^6\)Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the \(^7\)Be(\(d\),\(^3\)He)\(^6\)Li reaction on both the \(^6\)Li and \(^7\)Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The \(S\) factor of the (\(d\),\(^3\)He) channel from the present work is about 50\(\%\) lower than existing data at nearby energies. At big-bang energies, the \(S\) factor is about three orders of magnitude smaller than that of the (\(d,p\)) channel. The (\(d\),\(^3\)He) reaction rate is found to have a less than 0.1\(\%\) effect on the \(^{6,7}\)Li abundances.