Three-Body Model Analysis of Subbarrier alpha Transfer Reaction

摘要

Subbarrier alpha transfer reaction 13C(6Li,d)17O(6.356 MeV, 1/2+) at 3.6 MeVis analyzed with a alpha + d + 13C three-body model, and the asymptoticnormalization coefficient (ANC) for alpha + 13C --> 17O(6.356 MeV, 1/2+), whichessentially determines the reaction rate of 13C(alpha,n)16O, is extracted.Breakup effects of 6Li in the initial channel and those of 17O in the finalchannel are investigated with the continuum-discretized coupled-channels method(CDCC). The former is found to have a large back-coupling to the elasticchannel, while the latter turns out significantly small. The transfer crosssection calculated with Born approximation to the transition operator,including breakup states of 6Li, gives (C_{alpha 13C}{17O*})^2 =1.03 \pm 0.29fm^{-1}. This result is consistent with the value obtained by the previous DWBAcalculation.