在固态氙中成像单个钡原子用于 nEXO 中的钡标记
仪器与探测器
2018-12-14 v2 核实验
摘要
对无中微子双贝塔衰变的研究探究了中微子的基本性质，包括中微子与反中微子是否不同。双贝塔探测器体积大且昂贵，因此降低本底对于获得最高灵敏度至关重要。对来自 Xe 双贝塔衰变产生的 Ba 子原子进行识别或“标记”，为在 nEXO 无中微子双贝塔衰变实验中消除本底提供了一种技术。本工作所研究的标记方案利用低温探针将钡原子捕获在固态氙中，并通过固态氙矩阵中的荧光成像对钡原子进行标记。在此，我们通过在沉积于蓝宝石窗口上的固态氙矩阵上扫描聚焦激光，展示了对固态氙中单个钡原子的成像与计数。当激光停留在单个原子上时，荧光持续约 30~s 后骤降至本底水平，这清晰确认了单原子成像。在钡沉积物蒸发后，钡荧光持续存在至 0.16\% 的极限以下。这是首次在固态惰性元素中成像单原子。它确立了 nEXO 中钡标记技术的基本原理。
引用
@article{arxiv.1806.10694,
title = {Imaging individual barium atoms in solid xenon for barium tagging in nEXO},
author = {C. Chambers and T. Walton and D. Fairbank and A. Craycraft and D. R. Yahne and J. Todd and A. Iverson and W. Fairbank and A. Alamare and J. B. Albert and G. Anton and I. J. Arnquist and I. Badhrees and P. S. Barbeau and D. Beck and V. Belov and T. Bhatta and F. Bourque and J. P. Brodsky and E. Brown and T. Brunner and A. Burenkov and G. F. Cao and L. Cao and W. R. Cen and S. A. Charlebois and M. Chiu and B. Cleveland and M. Coon and W. Cree and M. Côté and J. Dalmasson and T. Daniels and L. Darroch and S. J. Daugherty and J. Daughhetee and S. Delaquis and A. Der Mesrobian-Kabakian and R. DeVoe and J. Dilling and Y. Y. Ding and M. J. Dolinski and A. Dragone and J. Echevers and L. Fabris and J. Farine and S. Feyzbakhsh and R. Fontaine and D. Fudenberg and G. Giacomini and R. Gornea and G. Gratta and E. V. Hansen and M. Heffner and E. W. Hoppe and J. Hößl and A. House and P. Hufschmidt and M. Hughes and Y. Ito and A. Jamil and C. Jessiman and M. J. Jewell and X. S. Jiang and A. Karelin and L. J. Kaufman and D. Kodroff and T. Koffas and S. Kravitz and R. Krücken and A. Kuchenkov and K. S. Kumar and Y. Lan and A. Larson and D. S. Leonard and G. Li and S. Li and Z. Li and C. Licciardi and Y. H. Lin and P. Lv and R. MacLellan and T. Michel and B. Mong and D. C. Moore and K. Murray and R. J. Newby and Z. Ning and O. Njoya and F. Nolet and O. Nusair and K. Odgers and A. Odian and M. Oriunno and J. L. Orrell and G. S. Ortega and I. Ostrovskiy and C. T. Overman and S. Parent and A. Piepke and A. Pocar and J. -F. Pratte and D. Qiu and V. Radeka and E. Raguzin and T. Rao and S. Rescia and F. Retière and A. Robinson and T. Rossignol and P. C. Rowson and N. Roy and R. Saldanha and S. Sangiorgio and S. Schmidt and J. Schneider and A. Schubert and D. Sinclair and K. Skarpaas VIII and A. K. Soma and G. St-Hilaire and V. Stekhanov and T. Stiegler and X. L. Sun and M. Tarka and T. Tolba and T. I. Totev. R. Tsang and T. Tsang and F. Vachon and B. Veenstra and V. Veeraraghavan and G. Visser and J. -L. Vuilleumier and M. Wagenpfeil and Q. Wang and J. Watkins and M. Weber and W. Wei and L. J. Wen and U. Wichoski and G. Wrede and S. X. Wu and W. H. Wu and Q. Xia and L. Yang and Y. -R. Yen and O. Zeldovich and X. Zhang and J. Zhao and Y. Zhou and T. Ziegler},
journal= {arXiv preprint arXiv:1806.10694},
year = {2018}
}