Low-lying states of ⁹⁴Zr are populated following b^- decay of ⁹⁴Y, and the emitted g rays from ⁹⁴Zr are detected using the 8p spectrometer composed of 20 Compton-suppressed HPGe detectors. High- statistics coincidence data have been used for the placement of very weak decay branches in the level scheme. Combining the results of level lifetimes from a previous experiment and the precisely measured branching ratio values of the weak decay branches from the present experiment, it is possible to extract the B(E2) values for all the possible decay branches from a given level. These values are helpful for proper identification of the collective and non-collective states of ⁹⁴Zr. The experimental findings have been compared with predictions from shell-model calculations with a limited valence space; however, these calculations are inadequate in reproducing all of the measured spectroscopic quantities.

中文翻译：

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通过β衰变探究94Zr的低能级结构

低洼的状态⁹⁴的Zr被填充B之后^-的衰变⁹⁴ Y，和从所发射的g线⁹⁴使用20康普顿抑制HPGe探测器组成的8P谱仪检测到的Zr。高统计重合数据已用于在级别方案中放置非常弱的衰减分支。结合先前实验的水平寿命结果和本实验精确测量的弱衰变分支的分支比率值，可以从给定水平提取所有可能衰变分支的B（E2）值。这些值有助于正确识别⁹⁴的集体和非集体状态锆 实验结果与有限价空间中壳模型计算的预测结果进行了比较。但是，这些计算不足以重现所有测得的光谱量。