Search for diabolic pair transfer at higher angular momentum states by using heavy-ion induced reaction

We will study the multi-nucleon transfer between two medium-heavy nuclei to find the dynamical aspects of pairing correlations in nuclei, in particular for the cases of nuclear superfluidity. To understand the enhancement of pair transfer probability due to the superfluidity nature of the nuclei which could lead to the nuclear Josephson effect, diabolic pair transfer, a manifestation of Berry phase in nuclei which involves pair transfer across a bend crossing and spin dependence of pairing correlations in two nucleon transfer reactions, we propose to study the transfer processes for 206 Pb on 172,174 Yb and 174,176 Hf systems, at and above the Coulomb barrier energies. The experiment will be performed at X7 using the ion beam from UNILAC facility. Final reaction products will be measured by using an annular proportional counter in coincidence with gamma–rays.