Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei
Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei
复制标题
稀土原子核激发态寿命测量中壳层附近集体的演化
DOI：
10.1103/physrevc.93.034323
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发表时间：
2016
影响因子：
3.1
通讯作者：
M.K. Smith
中科院分区：
文献类型：
--
作者：
V. Werner;N. Cooper;J.-M. Regis;M. Rudigier;E. Williams;J. Jolie;R. B. Cakirli;R.F. Casten;T. Ahn;V. Anagnostatou;Z. Berant;M. Bonett-Matiz;M. Elvers;A. Heinz;G. Ilie;D. Radeck;D. Savran;M.K. Smith
偶偶核第一激发态的激发强度应与价空间的大小直接相关，并在中壳层处最大。通过对稀土同位素最低状态寿命的高精度测量，测试了先前发现的中壳变形良好的转子强度饱和。使用快速闪烁探测器进行测量。结合最近重新测量的Hf和W同位素值，新数据消除了这些同位素值差异中观察到的差异。
Theexcitation strength of the first excitedstate in even-even nuclei should directly correlate with the size of the valence space and maximize at mid-shell. A previously found saturation ofstrengths in well-deformed rotors at mid-shell is tested through high-precision measurements of the lifetimes of the lowest-lyingstates of theandrare earth isotopes. Measurements were performed using fastscintillation detectors. Combined with the recently remeasuredvalues for Hf and W isotopes the new data remove discrepancies observed in the differentials ofvalues for these isotopes.