Shell Model Predictions for Very Neutron-Rich Nuclei in 132SN Region :   Interesting Features of Effective- Charge Revealed
  Shell model studies have been done for very neutron - rich nuclei in the range Z=50-55 and N=82-87. Good agreement of the theoretical level spectra with the experimental one for N=82, 83 I and Te nuclei is shown. Then the results for three very neutron-rich nuclei 137Sn and 136-137Sb have been presented. The present calculation favour a 2- ground state for 136Sb instead of 1- identified through beta decay.Interesting observation about the E2 effective charges for this region has been discussed. 
Sukhendusekhar Sarkar and M.Saha Sarkar