Majorana Demonstrator 校准数据中 13C(α,n)16O 反应的实验研究
核实验
2022-07-13 v2 高能物理 - 实验
仪器与探测器
摘要
中子俘获与反应产物的延迟衰变是超稀有事件搜寻中常见的本底来源。本工作中，我们研究了由 \textsc{Majorana Demonstrator} 校准源内发射的 α 粒子所诱导的 C(O 反应。这些源是基于钍的校准标准，封装于富碳材料中。当入射 α 粒子能量超过反应 Q 值时，会布居激发态 O，我们利用该态发射的 6129-keV γ 射线估算了反应速率。得益于 \textsc{Demonstrator} 锗探测器的优异能量性能，这些特征光子可在校准数据中被清晰观测到。借助 \textsc{Geant4} 模拟，我们将观测到的 6129-keV 光子率与基于 TALYS 的软件预测进行了比较。尽管统计不确定性较大，测量与预测结果一致。该一致性为未来双β衰变搜寻中来自 (α,n) 反应的本底预估提供了支持。
引用
@article{arxiv.2203.14228,
title = {Experimental study of 13C({\alpha},n)16O reactions in the Majorana Demonstrator calibration data},
author = {MAJORANA Collaboration and I. J. Arnquist and F. T. Avignone and A. S. Barabash and C. J. Barton and K. H. Bhimani and E. Blalock and B. Bos and M. Busch and M. Buuck and T. S. Caldwell and Y-D. Chan and C. D. Christofferson and P. -H. Chu and M. L. Clark and C. Cuesta and J. A. Detwiler and Yu. Efremenko and H. Ejiri and S. R. Elliott and G. K. Giovanetti and M. P. Green and J. Gruszko and I. S. Guinn and V. E. Guiseppe and C. R. Haufe and R. Henning and D. Hervas Aguilar and E. W. Hoppe and A. Hostiuc and M. F. Kidd and I. Kim and R. T. Kouzes and T. E. Lannen and A. Li and A. M. Lopez and J. M. Lopez-Castano and E. L. Martin and R. D. Martin and R. Massarczyk and S. J. Meijer and T. K. Oli and G. Othman and L. S. Paudel and W. Pettus and A. W. P. Poon and D. C. Radford and A. L. Reine and K. Rielage and N. W. Ruof and D. Tedeschi and R. L. Varner and S. Vasilyev and J. F. Wilkerson and C. Wiseman and W. Xu and C. -H. Yu and B. X. Zhu},
journal= {arXiv preprint arXiv:2203.14228},
year = {2022}
}
备注
Published version