Investigation of the nuclear structure in the even 168–188W nuclei

الملخص EN

A study of W isotopes chain from (168-188) nuclei is presented.

The energy levels, B (E2) transitions, the quadrupole moment of 21+ state and potential energy surfaces are described by using the general IBM-1 Hamiltonian.

In this chain nuclei evolve to SU (3) properties stepwise with increases the atomic mass number with sustentation the O (6) operator which be constant in the last five elements from 168-188W isotopes series.

The predicted theoretical calculations were compared with the experimental data in respective figures and tables, it was seen that the predicted results are in a good agreement with the experimental data.

In the framework of IBM calculations (27) energy levels were determined for 168-188W isotopes as (0 + 2:0.711MeV, 2 + 2: 0.32MeV , 2 + 3 : 0.55MeV, 3 + 1 :0.401MeV and 4 + 2 : 0.67MeV ) for 168W, ( 2 + 2: 0.169MeV, 2 + 3 :0.214MeV,3 + 1 :0.331MeV and 4 + 2 :0.525MeV ) for 170W , ( 2 + 2: 0.129MeV , 2 + 3 :0.147MeV, 3 + 1 :0.257MeV and 4 + 2 :0.417MeV ) for 172W, (0 + 2: 0.1321MeV, 2 + 2:0.157MeV , 2 + 3 :0.29MeV, 3 + 1 :0.301MeV and 4 + 2 :0.414MeV ) for 174W, (2 + 3 :1.67MeV, 4 + 3 :1.85MeV and 6 + 2 :1.59MeV ) for 180W, (4 + 3 :1.38MeV and 6 + 2 :1.34MeV ) for 184W, (6 + 2 :1.37MeV ) for 186W and (2 + 3 :1.2MeV, 3 + 1 :0.77MeV and 6 + 2 :1.21MeV ) for 188W.