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Chinese Physics C > 2024, Vol. 48 > Issue(10): 104101 DOI: 10.1088/1674-1137/ad57a6

Description of moment of inertia and the interplay between anti-pairing and pairing correlations in244Pu and248Cm

  • Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • A variable moment of inertia (VMI) inspired interacting boson model (IBM), which includes many-body interactions and a perturbation possessing $S O $ (5) (or $S U $ (5)) symmetry, is used to investigate the rotational bands of the $ A\sim 250 $ 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 intraband γ-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.
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Anshul Dadwal and Xiao-Tao He. Description of moment of inertia and the interplay between anti-pairing and pairing correlations in 244Pu and 248Cm[J]. Chinese Physics C. doi: 10.1088/1674-1137/ad57a6
Anshul Dadwal and Xiao-Tao He. Description of moment of inertia and the interplay between anti-pairing and pairing correlations in 244Pu and 248Cm[J]. Chinese Physics C. doi:10.1088/1674-1137/ad57a6 shu
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Received: 2024-05-06
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    Description of moment of inertia and the interplay between anti-pairing and pairing correlations in244Pu and248Cm

    • Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    • Received Date:2024-05-06
    • Available Online:2024-10-15

      Abstract:A variable moment of inertia (VMI) inspired interacting boson model (IBM), which includes many-body interactions and a perturbation possessing $S O $ (5) (or $S U $ (5)) symmetry, is used to investigate the rotational bands of the $ A\sim 250 $ 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} $

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