论文标题

改进了$ 0_2^+\ rightArrow0_1^+$ e0的过渡强度,用于$^{72} $ se使用香料光谱仪

Improved measurement of the $0_2^+\rightarrow0_1^+$ E0 transition strength for $^{72}$Se using the SPICE spectrometer

论文作者

Smallcombe, J., Garnsworthy, A. B., Korten, W., Singh, P., Ali, F. A., Andreoiu, C., Ansari, S., Ball, G. C., Barton, C. J., Bhattacharjee, S. S., Bowry, M., Caballero-Folch, R., Chester, A., Gillespie, S. A., Grinyer, G. F., Hackman, G., Jones, C., Melon, B., Moukaddam, M., Nannini, A., Ruotsalainen, P., Starosta, K., Svensson, C. E., Wadsworth, R., Williams, J.

论文摘要

硒同位素位于核图表的动荡区域的核心,在该区域中,形状共存会与中子 - 蛋白质配对相关性,三轴性和即将来临的质子滴管捕捉。在这项工作中,内部转换电子对$^{72} $ SE进行了研究,并使用香料和老虎阵列进行了$γ$ -Ray光谱。执行$ 0_2^+$状态的分支比率和寿命的新测量结果得出了$ρ^2的确定(E0; 0_2^+{\ rightarrow} 0_1^+)= 29(3)$ milliunits。进行了两次状态混合计算,这些计算强调了在形状己式的背景下对这种$ e0 $强度值的解释的重要性。

The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton dripline. In this work a study of $^{72}$Se by internal conversion electron and $γ$-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the $0_2^+$ state were performed yielding a determination of $ρ^2(E0;0_2^+{\rightarrow}0_1^+)=29(3)$ milliunits. two state mixing calculations were performed that highlighted the importance of interpretation of such $E0$ strength values in the context of shape-coexistence.

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