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07 February 2025
 
  » arxiv » 1605.0484

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Theoretical study of the $alpha+d$ $ ightarrow$ $^6$Li + $gamma $ astrophysical capture process in a three-body model
E.M. Tursunov ; A.S. Kadyrov ; S.A. Turakulov ; I. Bray ;
Date 2 May 2016
AbstractThe astrophysical capture process $alpha+d$ $ ightarrow$ $^6$Li + $gamma$ is studied in a three-body model.
The initial state is factorized into the deuteron bound state and the $alpha+d$ scattering state. The final nucleus $^6$Li(1+) is described as a three-body bound state $alpha+n+p$ in the hyperspherical Lagrange-mesh method.
The contribution of the E1 transition operator from the initial isosinglet states to the isotriplet components of the final state is estimated to be negligible. An estimation of the forbidden E1 transition to the isosinglet components of the final state is comparable with the corresponding results of the two-body model.
However, the contribution of the E2 transition operator is found to be much smaller than the corresponding estimations of the two-body model. The three-body model perfectly matches the new experimental data of the LUNA collaboration with the help of the spectroscopic factor 2.586, very consistent with the three-body structure of the final state.
Source arXiv, 1605.0484
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