JDependence of the (F19,O16) Reaction and Spin-Orbit Forces in the Heavy-Ion Optical Potential

Abstract

The shapes of the observed angular distributions for the reactions $^{28,30}\mathrm{Si}$($^{19}\mathrm{F}$, $^{16}\mathrm{O}$)$^{31,33}\mathrm{P}$ to ${\frac{3}{2}}^{+}$ and ${\frac{5}{2}}^{+}$ states differ strongly. A consistent description of this $j$ dependence and of the ground-state ${\mathrm{\textonehalf{}}}^{+}$ angular distributions is given by distorted-wave Born-approximation calculations which assume triton cluster transfer and include spin-orbit potentials in both entrance and exit channels. We find from coupled-channel Born-approximation calculations that inelastic excitation of $^{19}\mathrm{F}$ does not affect the shapes significantly.