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Cranking covariant density functional theory with a shell-model-like approach for the superdeformed band of 42Ca
International Journal of Modern Physics E ( IF 1.0 ) Pub Date : 2021-07-07 , DOI: 10.1142/s0218301321500555 Lang Liu 1
International Journal of Modern Physics E ( IF 1.0 ) Pub Date : 2021-07-07 , DOI: 10.1142/s0218301321500555 Lang Liu 1
Affiliation
The superdeformed rotational band in 42Ca is studied with the cranking covariant density functional theory complemented by a shell-model-like approach for treating the pairing correlations. The microscopic and self-consistent description of the superdeformed rotational band is obtained. The calculated energy surfaces show local minimums at ( β , γ ) = ( 0 . 4 5 , 2 0 ∘ ) from rotational frequency ℏ ω 0 to 1 . 5 MeV. The shape coexistence of spherical, normal deformation and superdeformation is found at ℏ ω = 1 . 5 MeV. The single-particle levels and configurations are analyzed in details with the deformation. The configuration of the superdeformed band is figured out as ( ν 1 f 7 / 2 4 1 d 3 / 2 − 2 ) ⊗ ( π 1 f 7 / 2 2 1 d 3 / 2 − 2 ) . The single-particle Routhians indicate that the neutrons configuration plays a key role in the formation of the superdeformed band, and the change of the protons configuration at ℏ ω = 2 . 0 MeV terminates the superdeformed band. The importance of pairing correlation to the superdeformed band is also studied in terms of the moments of inertia and the angular momentum.
中文翻译:
42Ca 超变形带的壳模型方法的启动协变密度泛函理论
42 Ca 中的超变形旋转带采用启动协变密度泛函理论进行研究,并辅以壳模型类方法来处理配对相关性。得到了超变形旋转带的微观自洽描述。计算的能量表面显示局部最小值( β , γ ) = ( 0 . 4 5 , 2 0 ∘ ) 从旋转频率ℏ ω 0 到1 . 5 兆伏安。球形、法向变形和超变形的形状并存于ℏ ω = 1 . 5 兆伏安。通过变形详细分析了单粒子水平和配置。超变形带的构型为( ν 1 F 7 / 2 4 1 d 3 / 2 - 2 ) ⊗ ( π 1 F 7 / 2 2 1 d 3 / 2 - 2 ) . 单粒子Routhians表明中子构型在超变形带的形成中起关键作用,质子构型的变化在ℏ ω = 2 . 0 MeV 终止超变形带。还根据惯性矩和角动量研究了配对相关性对超变形带的重要性。
更新日期:2021-07-07
中文翻译:
42Ca 超变形带的壳模型方法的启动协变密度泛函理论
42 Ca 中的超变形旋转带采用启动协变密度泛函理论进行研究,并辅以壳模型类方法来处理配对相关性。得到了超变形旋转带的微观自洽描述。计算的能量表面显示局部最小值