Isospin and Symmetry Structure in 36Ar

The interacting boson model-3(IBM-3) has been used to study the isospin excitation states and electromagnetic transitions for 36Ar nucleus. The mixed symmetry states and superdeformed band at low spin are also analyzed. The theoretical calculations are in agreement with experimental data, and the 36Ar is superdeformed rotational nucleus close to the SU(3) limit. The present calculations indicate that the 24+ state is the lowest mixed symmetry state and the lowest isospin T = 1 excitation state and at about 6.2 MeV, and the bandhead of superdeformed band is 02+ state.