通过直接 β 计数高精度测定 ¹⁴O 半衰期
核实验
2022-05-18 v1
摘要
通过在 TRIUMF 的同位素分离与加速器（ISAC）设施上进行的直接 β 计数实验，高精度测定了超允许费米 β⁺ 发射体 ¹⁴O 的半衰期。结果为 (O) = 70619.2(76) ms，与先前 11 次测量得到的世界平均值一致，但精度更高。将本工作推得的 ¹⁴O 半衰期与该量先前最精确的测量相结合，使总体不确定度降低了近 2 倍。新的世界平均值为 (O) = 70619.6(63) ms，由 8 个自由度得到的约化 值为 0.87。
引用
@article{arxiv.2204.06668,
title = {High-precision half-life determination of $^{14}$O via direct $\beta$ counting},
author = {S. Sharma and G. F. Grinyer and G. C. Ball and J. R. Leslie and C. E. Svensson and F. A. Ali and C. Andreoiu and N. Bernier and S. S. Bhattacharjee and V. Bildstein and C. Burbadge and R. Caballero-Folch and R. Coleman and A. Diaz Varela and M. R. Dunlop and R. Dunlop and A. B. Garnsworthy and E. Gyabeng Fuakye and G. M. Huber and B. Jigmeddorj and K. Kapoor and A. T. Laffoley and K. G. Leach and J. Long and A. D. MacLean and C. R. Natzke and B. Olaizola and A. J. Radich and N. Saei and J. T. Smallcombe and A. Talebitaher and K. Whitmore and T. Zidar},
journal= {arXiv preprint arXiv:2204.06668},
year = {2022}
}
备注
8 pages, 6 figures, accepted for publication in the European Physical Journal A