Analysis of alpha-cluster transfer in 16O+ 12C and 12C+ 16O at energies near Coulomb barrier
Sh. Hamadaa,* , N. Burtebayevb K.A. Gridnevc N. Amangeldib
a Kazakh National University, Almaty, Kazakhstan
b Eurasia National University, Astana, Kazakhstan
c St. Petersburg University, Russia
Received 7 March 2011; received in revised form 16 April 2011; accepted 18 April 2011
Available online 22 April 2011
The aim of this work is to track the phenomenon of α-cluster transfer mechanism at low energies 1.25, 1.5 and 1.75 MeV/n, close to the Coulomb barrier energy for 12C(16O,12C)16O and 16O (12C,16O ) 12C nuclear systems. The measurements of the angular distribution show a signiﬁcant increase in the differential cross section at large angles due to alpha-transfer mechanism. The optical model code SPI-GENOA could be used effectively for ﬁtting the experimental data with the theoretical predictions nearly up to angle 90◦, where the differential cross section decreases steadily with increasing the scattering angle. For the second hemisphere, at angles greater than 100◦, there is a large increase in cross section due to the contribution of α-transfer mechanism, and the Distorted Wave Born Approximation (DWBA) method could be used effectively for ﬁtting the experimental data with the theoretical predictions at this region using (DWUCK5) code.