Abstract
The cross section of the direct E0 pair emission has meaningful contribution to the total cross section of the C-12(alpha, gamma)O-16 reaction at low energy <= 1.9 MeV. E0 resonance emission and internal pair conversion have significant effect to the total cross section of the C-12(alpha, gamma)O-16 reaction. In this paper e(+)e(-) paired emission has been focused on taking into account the angular correlation. E0 contribution is also significant in a presence of E1 and E2 transition, therefore e(+)e(-) pair emission may not be neglected and has a significant effect on the total cross section in the case of the C-12(alpha, gamma)O-16 reaction.