超冷中子的磁阱囚禁
核实验
2009-11-07 v1
摘要
报道了中子的三维磁约束。中子通过与4He的非弹性散射被装载到Ioffe型超导磁阱中。具有足够低能量且处于适当自旋态的散射中子被磁场约束直至衰变。中子衰变产生的电子在液氦浴中引起闪烁，产生极紫外光脉冲。该光被频率下转换至可见光并被探测。结果显示每个装载周期有500 +/- 155个中子被磁囚禁，与理论预测一致。观测信号寿命为660 s +290/-170 s，与中子β衰变寿命一致。
引用
@article{arxiv.nucl-ex/0103003,
title = {Magnetic trapping of ultracold neutrons},
author = {C. R. Brome and J. S. Butterworth and S. N. Dzhosyuk and C. E. H. Mattoni and D. N. McKinsey and J. M. Doyle and P. R. Huffman and M. S. Dewey and F. E. Wietfeldt and R. Golub and K. Habicht and G. L. Greene and S. K. Lamoreaux and K. J. Coakley},
journal= {arXiv preprint arXiv:nucl-ex/0103003},
year = {2009}
}
备注
17 pages, 18 figures, accepted for publication in Physical Review C