Fusion evaporation cross sections for the Al27+Sc45 (Q=9.63 MeV) system are measured down to about 300 nb. Deviations from standard coupled-channels calculations were observed in this system at the lowest energies. The steep fall-off of the fusion cross sections can be reproduced by calculations using a shallow potential model, which was originally developed to explain the hindrance behavior of heavy-ion fusion in medium-mass systems with negative Q values. Comparisons of the hindrance behavior between the present experiment and other systems, for example, Si28+Si30 (Q=14.3 MeV) and S36+Ca48 (Q=7.55 MeV) are presented. © 2010 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review C - Nuclear Physics
Jiang, C., Rehm, K., Esbensen, H., Back, B., Janssens, R., Collon, P., Deibel, C., Digiovine, B., Figueira, J., Greene, J., Henderson, D., Lee, H., Notani, M., Marley, S., Pardo, R., Patel, N., Seweryniak, D., Tang, X., Ugalde, C., & Zhu, S. (2010). Fusion hindrance for Al27+Sc45 and other systems with a positive Q value. Physical Review C - Nuclear Physics, 81 (2) https://doi.org/10.1103/PhysRevC.81.024611