中文摘要：

【正】 The interacting boson model-3（IBM-3） has been used to study the isospin excitation states and electromag-netic 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 nucleusclose to the SU（3） limit.The present calcula,tions indicate that the 2₄⁺ state is the lowest mixed symmetry state and thelowest isospin T=1 excitation state and at about 6.2 MeV,and the bandhead of superdeformed band is 0₂⁺ state.