Measurement of astrophysical S-factor for 9Be(d, α 0)7Li and 9Be(d, α 1)7Li* reactions at low energies *

The thick-target yield of the 9Be(d, α 0)7Li and 9Be(d, α 1)7Li* reactions has been first directly measured over deuteron energies from 66 to 94 keV. The obtained S(E i) of α 0 and α 1 have similar trends calculated by the thin-target yield, consistent with Yan’s report within the errors. Furthermore, the parametric expression of S(E) was obtained to calculate the theoretical thick target yield, and it roughly agrees with the experimental thick target yield.