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arXiv 1007.4943nucl-ex
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$^{44}$ S中N=28时的长轴-球形共存

Prolate-Spherical Shape Coexistence at N=28 in $^{44}$S

C. Force, S. Grévy, L. Gaudefroy, O. Sorlin, L. Caceres, F. Rotaru, J. Mrazek, N. L. Achouri, J. C. Angélique, F. Azaiez, B. Bastin, R. Borcea, A. Buta, J. M. D… 展开作者

C. Force, S. Grévy, L. Gaudefroy, O. Sorlin, L. Caceres, F. Rotaru, J. Mrazek, N. L. Achouri, J. C. Angélique, F. Azaiez, B. Bastin, R. Borcea, A. Buta, J. M. Daugas, Z. Dlouhy, Zs. Dombradi, F. De Oliveira, F. Negoita, Y. Penionzhkevich, M. G. Saint-Laurent, D. Sohler, M. Stanoiu, I. Stefan, C. Stodel, F. Nowacki

摘要:

在\textsc{ganil}上用延迟$γ$和电子能谱研究了$^{44}$ S的结构。首次测量了0 $^+_2$同分异构态到2 $^+_1$和0 $^+_1$态的衰变率,从而降低了跃迁几率B(E2~:~2 $^{+}_1$ $\rightarrow$ 0 $^{+}_2)$ = 8.4(26)~e $^2$ fm $\rightarrow$ @ MV和高强度$ρ^2$(E0~:~0 $^{+}_2$ $\rightarrow$ 0 $^{+}_1)$ =~ 8. 7(7)$\times$ 10 $^{-3}$ .壳模型计算的比较指向扁长球形共存和现象学的两级混合模型用于提取两种配置之间的弱混合。

英文摘要:

The structure of $^{44}$S has been studied using delayed $γ$ and electron spectroscopy at \textsc{ganil}. The decay rates of the 0$^+_2$ isomeric state to the 2$^+_1$ and 0$^+_1$ states have been measured for the first time, leading to a reduced transition probability B(E2~:~2$^{+}_1$$\rightarrow$0$^{+}_2)$= 8.4(26)~e$^2$fm$^4$ and a monopole strength $ρ^2$(E0~:~0$^{+}_2$$\rightarrow$0$^{+}_1)$ =~8.7(7)$\times$10$^{-3}$. Comparisons to shell model calculations point towards prolate-spherical shape coexistence and a phenomenological two level mixing model is used to extract a weak mixing between the two configurations.

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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