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arXiv 1503.04606nucl-thnucl-ex
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在$^{147}$ Nd中寻找八极相关

Search for octupole correlations in $^{147}$Nd

E. Ruchowska, H. Mach, M. Kowal, J. Skalski, W. A. Plociennik, B. Fogelberg

摘要:

本文用多重谱和$γγ$符合测量研究了$^{147}$ Nd的激发态性质。在$γ$ Nd.用改进的延时$βγγ$(t)方法测量了$^{147}$ Pr的$β$衰变中填充的$^{147}$ Nd的8个激发能级的寿命。对$^{147}$ Nd中的30个$γ$ -跃迁进行了约化跃迁几率的测定。用Strutinsky方法计算了$^{147}$ Nd在($β_{2}$,$β_{3}$)平面上的势能面,预测了两种具有非零八极形变的单准粒子组态,K=1/2和K=5/2.我们没有观察到K=5/2的宇称二重带。对于能形成K=1/2宇称二重态的一对相反宇称带,我们只能确定偶极矩的下限,$|D_0|\geq$ 0.02 e $\cdot fm$。

英文摘要:

Properties of excited states in $^{147}$Nd have been studied with multispectra and $γγ$ coincidence measurements. Twenty-four new $γ$-lines and three new levels have been introduced into the level scheme of $^{147}$Nd. Lifetimes of eight excited levels in $^{147}$Nd, populated in the $β$ decay of $^{147}$Pr, have been measured using the advanced time-delayed $βγγ$(t) method. Reduced transition probabilities have been determined for 30 $γ$-transitions in $^{147}$Nd. Potential energy surfaces on the ($β_{2}$,$β_{3}$) plane calculated for $^{147}$Nd using the Strutinsky method predict two single quasiparticle configurations with nonzero octupole deformation, with K=1/2 and K=5/2. We do not observe parity doublet bands with K=5/2. For pair of opposite parity bands that could form the K=1/2 parity doublet we were able only to determine lower limit of the dipole moment, $|D_0|\geq$0.02 e$\cdot fm$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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