用于超冷中子存储的化学镀镍磷镀层的表征
核实验
2023-02-09 v2
摘要
化学镀镍是一种成熟的工业工艺，可提供适用于传输和存储超冷中子 (UCN) 的稳健且相对低成本的镀层。利用粗糙度测量和 UCN 存储实验，我们表征了由抛光铝或不锈钢管经多家供应商镀制而成的 UCN 导向管。所有化学镀镍镀层都同样适用于 UCN 存储，在 90 neV 至 190 neV 能量范围内每次壁面反弹的平均损失概率为 至 ，或虚 Fermi 势与实 Fermi 势之比 为 至 。不同高度处的测量表明，UCN 损失的能量依赖关系可由虚 Fermi 势很好地描述。为避免镀层过程中表面粗糙度增加从而导致 UCN 透射率降低，需要一些特殊考虑。粗糙度增加仅对存储性能有轻微影响。基于这些发现，我们选择了一家供应商为 UCN 生产容器镀层，该容器将容纳用于新 TRIAMF UltraCold Advanced Neutron (TUCAN) 源的超流氦转换器，实现了可接受的 UCN 存储性能，。
引用
@article{arxiv.2208.05590,
title = {Characterization of electroless nickel-phosphorus plating for ultracold-neutron storage},
author = {H. Akatsuka and T. Andalib and B. Bell and J. Berean-Dutcher and N. Bernier and C. P. Bidinosti and C. Cude-Woods and S. A. Currie and C. A. Davis and B. Franke and R. Gaur and P. Giampa and S. Hansen-Romu and M. T. Hassan and K. Hatanaka and T. Higuchi and C. Gibson and G. Ichikawa and I. Ide and S. Imajo and T. M. Ito and B. Jamieson and S. Kawasaki and M. Kitaguchi and W. Klassen and E. Korkmaz and F. Kuchler and M. Lang and M. Lavvaf and T. Lindner and M. Makela and J. Mammei and R. Mammei and J. W. Martin and R. Matsumiya and E. Miller and K. Mishima and T. Momose and S. Morawetz and C. L. Morris and H. J. Ong and C. M. O'Shaughnessy and M. Pereira-Wilson and R. Picker and F. Piermaier and E. Pierre and W. Schreyer and S. Sidhu and D. Stang and V. Tiepo and S. Vanbergen and R. Wang and D. Wong and N. Yamamoto},
journal= {arXiv preprint arXiv:2208.05590},
year = {2023}
}
备注
8 pages, 7 figures