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本工作给出了对248Cf中带的理论分析.这条带在实验中被观测到自旋和激发能高于4 MeV,因此2?25?该原子核在相应组态下裂变位垒至少持续到此角动量和激发能.就顺排性质和衰变特征对实验带背后的物理机2?制进行了探讨.二准中子,二准质子以及非轴对称八极形变(基于反射不对称壳模型)内禀结构的不同假设通过电磁跃迁性质进行评估.结果显示,实验带的谱学特性在粒子-声子混合图像下能得到较好的解释:准粒子阻碍了2?向基带的跃迁,非轴对称八极声子增大了旋称伙伴带的能级劈裂,减弱了带间相互作用.该核低激发态展现的超导和正常相共存被尝试性地归因于中子152亚壳附近对相互作用的减弱.“,”An independent theoretical analysis is presented for the 2– band in 248Cf,which has been iden-tified to spin25h and excitation energy 4MeV,implying the fission barrier persists at least up to that angular momentum and excitation for the configuration. The underlying physics for the experimentally ob-served band is discussed in terms of alignment properties and decay pattern. Different scenarios for as-sumptions about intrinsic configuration are assessed with transition rates analysis. It turns out that only by invoking a particle-phonon mixing picture can the decay characteristics of the pair of bands be well ac-counted for,i.e. quasiparticle nature forbids decay to ground-state band,non-axial octupole phonon shifts the signature partners in energy and diminishes mutual interaction. The coexisting normal and supercon-ducting phases are tentatively attributed to weak neutron pairing in the proximity of 152 deformed shell gap.