Systematics of nuclear deformation in large regions - art. no. 067302

In this paper we present the systematics of nuclear deformation for even-ev en, even-odd, odd-even, and doubly odd nuclei in four regions: the 50<Z<les s than or equal to>66 and 82<N<less than or equal to>104 region, the 66<Z<8 2 and 82<N<less than or equal to>104 region, the 66<Z<82 and 104<N<126 regi on, and the 82<Z<less than or equal to>104 and 126<N<less than or equal to> 155 region. Compact trajectories are obtained using the P = NpNn/(N-p + N-n ) factor. It is found that there are no apparent shifts in the trajectories between the even-even nuclei previously studied with the P factor, and the other classes of nuclei included here. This may suggest that the pairing i nteraction strength of even-even nuclei is very close to that in their odd A and doubly odd neighbors. Strong anomalies around the Z similar to 80 reg ion are highlighted.