Description of moment of inertia and the interplay between anti-pairing and pairing correlations in ^(244)Pu and ^(248)Cm  

作　　者：Anshul Dadwal Xiao-Tao He Anshul Dadwal;贺晓涛(Department of Nuclear Science and Technology,College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]Department of Nuclear Science and Technology,College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Chinese Physics C》2024年第10期176-184,共9页中国物理C（英文版）

基　　金：Supported by the the National Key R and D Program of China(2023YFA1606503)。

摘　　要：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.

关 键 词：rotational bands nuclear structure back-bending up-bending 250 mass region 

分 类 号：TL31[核科学技术—核技术及应用]