Magnetic dipole transition in proton-deuteron radiative capture at BBN energies within potential model

The pd radiative capture reaction plays a vital role in Big Bang nucleosynthesis and stellar proton-proton chain. The study of the low-energy reaction is challenging in both experiments and theories. Using the framework of potential model, we analyze pd radiative capture below 1 MeV for both electri...

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Bibliographic Details
Published in:Physica scripta 2024-06, Vol.99 (6), p.65026
Main Authors: Le Anh, Nguyen, Nhut Anh, Dao, Huy Tho, Do, Huu Nha, Nguyen
Format: Article
Language:English
Subjects:
big bang nucleosynthesis
elastic proton scattering
potential model
radiative capture
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Summary:The pd radiative capture reaction plays a vital role in Big Bang nucleosynthesis and stellar proton-proton chain. The study of the low-energy reaction is challenging in both experiments and theories. Using the framework of potential model, we analyze pd radiative capture below 1 MeV for both electric dipole ( E 1) and magnetic dipole ( M 1) transitions. The obtained astrophysical S factors agree well with recent results, especially at energies relevant to sensitive deuterium abundance. The calculated reaction rate shows good agreement, with less than a 5% difference compared to recent works. The extrapolated value for S (0) including both transitions is determined to be 0.211 ± 0.016 eV b. A comparison with experimental data using the χ 2 test reveals the sensitivity of the M 1 cross section at low energies to the scattering potential depth.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ad4793