中文

$^{99}$Tc $\beta$ 谱的高精度测量

核实验 2023-10-05 v3 核理论 仪器与探测器

摘要

利用金属磁量热计在两个实验室对99^{99}Tc的β谱进行了高精度测量。独立的样品制备、评估方法和分析得出一致的结果,并且该谱可被测量至低于1 keV。通过对实验数据集的交叉评估也获得了一致的β谱。使用硅探测器在4π4\pi构型下的额外独立测量确认了25 keV以上的谱形。我们进行了包括核结构与原子效应的详细理论计算。发现谱形对轴矢量耦合常数的有效值敏感。结合测量与预言,我们提取出Qβ=Q_{\beta}=295.82(16) keV和gAeff=1.530(83)g_A^{\text{eff}} = 1.530 (83)。此外,我们推导出β谱的平均能量Eβ\overline{E}_{\beta}=98.45(20) keV、logf=0.47660(22)\log f = -0.47660 (22)logft=12.3478(23)\log ft = 12.3478 (23)

关键词

引用

@article{arxiv.2309.14014,
  title  = {High precision measurement of the $^{99}$Tc $\beta$ spectrum},
  author = {Michael Paulsen and Philipp Ranitzsch and Martin Loidl and Matias Rodrigues and Karsten Kossert and Xavier Mougeot and Abilasha Singh and Sylvain Leblond and Jörn Beyer and Lina Bockhorn and Christian Enss and Mathias Wegner and Sebastian Kempf and Ole Nähle},
  journal= {arXiv preprint arXiv:2309.14014},
  year   = {2023}
}

备注

15 pages, 9 figures, adjusted the legend symbols in figures 6-9 to the format (italics, subscripts etc.) used in the text [version 2], corrected assignment of author affiliations and capital lettering in references [version 3]