A variable moment of inertia(VMI)inspired interacting boson model(IBM),which includes many-body interactions and a perturbation possessing(5)(or(5))symmetry,is used to investigate the rotational bands of the mass regi...A variable moment of inertia(VMI)inspired interacting boson model(IBM),which includes many-body interactions and a perturbation possessing(5)(or(5))symmetry,is used to investigate the rotational bands of the mass region.A novel modification is introduced,extending the Arima coefficient to the third order.This study is dedicated to the quantitative analysis of evolving trends in intrabandγ-transition energy as well as the kinematic and dynamic moments of inertia(MoIs)within the rotational bands of ^(244)Pu and ^(248)Cm.The computed outcomes exhibit an exceptional degree of agreement with experimental observations across various conditions.The significance of including a higher-order Arima coefficient is further examined by contrasting it with the previously proposed model.The calculated results demonstrate the significance of both the anti-pairing and pairing effects in the evolution of the dynamic MoI.Additionally,these insights reveal the importance of a newly introduced parameter in accurately depicting complex nuclear behaviors,such as back-bending,up-bending,and downturn in the MoI.展开更多
基金Supported by the the National Key R and D Program of China(2023YFA1606503)。
文摘A variable moment of inertia(VMI)inspired interacting boson model(IBM),which includes many-body interactions and a perturbation possessing(5)(or(5))symmetry,is used to investigate the rotational bands of the mass region.A novel modification is introduced,extending the Arima coefficient to the third order.This study is dedicated to the quantitative analysis of evolving trends in intrabandγ-transition energy as well as the kinematic and dynamic moments of inertia(MoIs)within the rotational bands of ^(244)Pu and ^(248)Cm.The computed outcomes exhibit an exceptional degree of agreement with experimental observations across various conditions.The significance of including a higher-order Arima coefficient is further examined by contrasting it with the previously proposed model.The calculated results demonstrate the significance of both the anti-pairing and pairing effects in the evolution of the dynamic MoI.Additionally,these insights reveal the importance of a newly introduced parameter in accurately depicting complex nuclear behaviors,such as back-bending,up-bending,and downturn in the MoI.
