Role of non-collective excitations in subbarrier fusion reactions

• Main Authors: Hagino, K., Yusa, S., Rowley, N.
• Format: Conference Proceeding
• Language: English
• ISSN: 2100-014X; 2100-014X
• DOI: 10.1051/epjconf/20111711002

We carry out a large scale coupled-channels calculations in order to discuss the effect of non-collective excitations on heavy-ion fusion and quasi-elastic scattering at subbarrier energies. To this end, we take into account all the states in 208Pb below 7 MeV, which were previously identified with a high resolution proton inelastic scattering measurement. Our calculations indicate that the energy dependence of the fusion and quasi-elastic cross sections are not altered much due to the non-collective coupling, although the peak structure in the barrier distributions is slightly smeared. We also show that our calculations well reproduce the energy dependence of the Q-value distribution for backward quasi-elastic scattering.