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arXiv · 1908.09525

High-$K$ multi-particle bands and pairing reduction in $^{254}$No

Xiao-Tao He·Shu-Yong Zhao·Zhen-Hua Zhang·Zhong-Zhou Ren
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Abstract

The multi-particle states and rotational properties of two-particle bands in $^{254}$No are investigated by the cranked shell model (CSM) with pairing correlations treated by a particle-number conserving (PNC) method. For the first time, the rotational bands on top of two-particle $K^π=3^+,8^-$ and $10^+$ states and the pairing reduction are studied theoretically in $^{254}$No. The experimental excitation energies and moments of inertia for the multi-particle state are reproduced well by the calculation. Better agreement with the data are achieved by including the high-order deformation $\varepsilon_{6}$ which leads to enlarged $Z=100$ and $N=152$ deformed shell gaps. The rise of the $J^{(1)}$ in these two-particle bands compared with the ground-state band is attributed to the pairing reduction due to the Pauli blocking effects.

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Xiao-Tao He, Shu-Yong Zhao, Zhen-Hua Zhang, Zhong-Zhou Ren. 2019-08-26. High-$K$ multi-particle bands and pairing reduction in $^{254}$No. https://arxiv.org/abs/1908.09525

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