First ever storage of ultracold neutrons in a magnetic trap made of permanent magnets
First ever storage of ultracold neutrons in a magnetic trap made of permanent magnets
复制标题
DOI：
10.6028/jres.110.051
复制
发表时间：
2005-07-01
影响因子：
1.5
通讯作者：
Kovrizhnykh, NA
中科院分区：
文献类型：
--
作者：
Ezhov, VF;Andreev, AZ;Kovrizhnykh, NA
任何利用材料瓶中的超冷中子(UCN)进行中子寿命实验的精度的进一步提高都是有限的，因为当UCN从壁面反射时，不可避免地会产生系统效应。然而，如果使用UCN的磁囚禁，原则上可以排除这种影响。首次展示了UCN在一个由永磁体制成的小型磁捕获器中的存储。在本可行性研究中测得的储存时间为(882+/-16)S。在此精度水平下，未观察到去极化。
Further improvement in the accuracy of any neutron lifetime experiment by means of ultracold neutrons (UCN) in material bottles is limited due to unavoidable systematic effects when the UCN are reflected from the walls. However, such effects can be excluded in principle if magnetic trapping of UCN is used. The storage of UCN in a small magnetic trap made of permanent magnets was demonstrated for the first time ever. The measured storage time in this feasibility study was (882 +/- 16) s. At this level of accuracy no depolarization was observed.