New investigation of half-lives for the decay modes of V50
New investigation of half-lives for the decay modes of
V50
复制标题
V50 衰变模式半衰期的新研究
DOI：
10.1103/physrevc.99.045501
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发表时间：
2018
影响因子：
3.1
通讯作者：
K. Zuber
中科院分区：
文献类型：
--
作者：
M. Laubenstein;B. Lehnert;S. Nagorny;S. Nisi;K. Zuber
格朗萨索地下实验室(LNGS)对V的4重禁戒非唯一衰变的衰变模式进行了新的探索。总共已累积接触197公斤$\次$d。电子俘获进入第一激发态的半衰期是迄今为止测量到的最高精度为$2.67_{-0.18}^{+0.16}\x 10^{17}$yr(68%C.I.)其中系统学的不确定性占主导地位。通过对β-衰变为第一激发态的研究，得到的下限为${1.9}×10^{19}$yr(90%C.I.)，与现有结果相比提高了近一个数量级。新测量的灵敏度现在处于理论预测的范围内。
A new search for the decay modes of the 4-fold forbidden non-unique decay of $^{50}$V has been performed at the Gran Sasso Underground Laboratory (LNGS). In total an exposure of 197 kg $\times$ d has been accumulated. The half-life for the electron capture into the first excited state of $^{50}$Ti has been measured with the highest precision to date as $2.67_{-0.18}^{+0.16} \times 10^{17}$ yr (68% C.I.) in which systematics uncertainties dominate. The search for the $\beta$-decay into the first excited state of $^{50}$Cr resulted in a lower limit of ${1.9} \times 10^{19}$ yr (90% C.I.), which is an improvement of almost one order of magnitude compared to existing results. The sensitivity of the new measurement is now in the region of theoretical predictions.
Heliotron J 中的 ECH 实验（日语）
DOI：
--
发表时间：
2002
期刊：
Journal of Plasma and Fusion Research 78
影响因子：
--
作者：
KONDO Katsumi
通讯作者：
KONDO Katsumi