Coupled-channels analyses for large-angle quasi-elastic scattering in massive systems

Zamrun, F. M.*; 萩野 浩一*; 光岡 真一; 池添 博

Physical Review C, 77(3), p.034604_1 - 034604_11, 2008/03

https://doi.org/10.1103/PhysRevC.77.034604

We discuss in detail the coupled-channels approach for large-angle quasi-elastic scattering in massive systems, where many degrees of freedom may be involved in the reaction. We especially investigate the effects of single-, double-, and triple-phonon excitations on the quasi-elastic scattering for Ti, Cr, Fe, Ni, and Zn+Pb systems, for which the experimental cross sections have been measured recently. We show that the present coupled-channels calculations well account for the overall width of the experimental barrier distribution for these systems. In particular, it is shown that the calculations taking into account the double-quadrupole phonon excitations in the projectiles and triple-octupole phonon excitations in the target reasonably well reproduce the experimental quasi-elastic cross section and barrier distribution.