摘要
We conducted a comprehensive study of the neutron capture cross section of 12C within the relevant astrophysical energy range.Through rigorous R-matrix analysis,we determined the Maxwellian-averaged cross section to be 11.98±0.25μb at kT=30 keV.This result is approximately four times higher than the thermal neutron capture cross section estimated in earlier studies assuming the 1/v law.The implications of our findings extend to the region of inhomogeneous Big-Bang models in nuclear astrophysics,where understanding the behaviour of neutron capture cross sections plays a crucial role in elucidating the intricate processes that shaped the early universe.
