Short-Lived alpha-Emitting Isotope Np-222 and the Stability of the N=126 Magic Shell
Short-Lived alpha-Emitting Isotope Np-222 and the Stability of the N=126 Magic Shell
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短命 α 发射同位素 222Np 和 N = 126 Magic Shell 的稳定性
DOI：
10.1103/physrevlett.125.032502
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发表时间：
2020
影响因子：
8.6
通讯作者：
Xu H. S.
中科院分区：
文献类型：
--
作者：
Ma L.;Zhang Z. Y.;Gan Z. G.;Zhou X. H.;Yang H. B.;Huang M. H.;Yang C. L.;Zhang M. M.;Tian Y. L.;Wang Y. S.;Zhou H. B.;He X. T.;Mao Y. C.;Hua W.;Duan L. M.;Huang W. X.;Liu Z.;Xu X. X.;Ren Z. Z.;Zhou S. G.;Xu H. S.
在完全聚变反应中产生了一种新的、寿命很短的缺中子同位素，并在充气反冲分离器SHANS中观察到。利用反冲相关测量方法对新同位素进行了鉴定，建立了新同位素的六条衰变链，并对新同位素的衰变性质进行了实验测定。通过增加新的数据，改进了Np同位素的衰变系统，验证了Np同位素的壳效应。本文在衰变约化宽度的框架内讨论了贫中子核到Np的壳层闭合的演化。
A new, very short-lived neutron-deficient isotopewas produced in the complete-fusion reaction, and observed at the gas-filled recoil separator SHANS. The new isotopewas identified by employing a recoil-correlation measurement, and six-decay chains were established for it. The decay properties ofwithandwere determined experimentally. The-decay systematics of Np isotopes is improved by adding the new data for, which validates theshell effect in Np isotopes. The evolution of theshell closure is discussed in the neutron-deficient nuclei up to Np within the framework of-decay reduced width.