[en] In the present work, high spin states in ¹³¹Ba have been studied through the ¹²²Sn (¹³C, 4n) ¹³¹Ba heavy ion fusion evaporation reaction with a beam energy of 65 MeV

[en] High spin states of ^130,131Ba have been investigated via fusion evaporation reactions ¹²²Sn(¹³C,4n)¹³¹Ba and ¹²²Sn(¹³C, 5n)¹³⁰Ba at E_beam=65 MeV. The level schemes of ^130,131Ba have been extended by placing several new γ transitions. A few interband transitions connecting two negative-parity bands, which are the experimental fingerprints of signature partners, have been established in ¹³⁰Ba. Spin and parity of a side band have been assigned in ¹³¹Ba and this dipole band is proposed to have a three-quasiparticle configuration, νh_11/2 x πh_11/2 x πg_7/2. The observed band structures and nuclear shape evolution as a function of the angular momentum have been discussed in the light of Total-Routhian-Surface calculations. (orig.)

[en] Experiments to investigate micro-second isomers would uniquely utilize the combination of the resolving power of the array as well as the sensitivity of the HIRA at NSC, New Delhi. Such micro-second isomers have been reported at moderate spins in the vicinity of the N ∼50 shell closure. It is of significant interest to identify new isomers in these nuclei both at moderate and high spins. In this work, the lifetime of the micro-second isomer has been confirmed from the decay of the negative parity states below the isomer

[en] Heavy ion induced transfer reactions have the potential to play a significant role in investigating the level structure of N ∼20 neutron-rich nuclei that are not easily accessible using fusion evaporation reactions. Transfer reactions near the Coulomb barrier offer unique possibilities since the neutron-pickup and proton-stripping reactions will lead to neutron-rich projectile-like fragments. Neutron-rich N ∼20 nuclei, ³⁶S, ^33,34P have been investigated using γ-ray spectroscopy following HI transfer reactions

[en] High spin states in ¹⁴⁶Tb were populated using the ³⁴S + ¹¹⁵In reaction at an incident beam energy of 140 MeV. The preliminary analysis has identified more than 20 new transitions belonging to the ¹⁴⁶Tb