Dynamical Effects on Sub-barrier Fusion of ^40,48Ca+^90,96Zr

We have measured the fusion cross sections for ⁴⁸Ca+^90,96 around the Coulomb barrier and presented them along with the experimental data of ⁴⁰Ca+^90,96. The experimental results are compared with the improved quantum molecular dynamics model calculations. It is shown in comparison that the dynamical effects play an important role in the sub-barrier fusion reactions.