Facility for the development of the multilayer neutron mirror at KUR
Facility for the development of the multilayer neutron mirror at KUR
复制标题
KUR 多层中子镜开发设施
DOI：
10.1016/0168-9002(94)01009-9
复制
发表时间：
1995
影响因子：
1.4
通讯作者：
S. Okamoto
中科院分区：
文献类型：
--
作者：
S. Tasaki;T. Ebisawa;T. Akiyoshi;T. Kawai;S. Okamoto
本文介绍了用于研制慢中子处理装置的多层膜反射镜的设备。该装置由真空蒸发系统、中子反射计和反射率计算程序组成。讨论了蒸发的性质。中子反射计利用飞行时间方法，可以测量低至10−4的反射率。在反射率计算程序中，我们采用了一种改进的光学势的中子光学方法，该方法减小了层间的对比度，并平滑了层边界附近的势。结果表明，通过选择合适的计算参数，计算结果与实验结果吻合较好。
The facility for the development of the multilayer mirror as a device for handling slow neutrons is described. The facility consists of a vacuum evaporation system, a neutron reflectometer and a reflectivity calculation program. The properties of the evaporation are discussed. The neutron reflectometer makes use of the time-of-flight method and can measure the reflectivity down to 10−4. In the reflectivity calculation program, we adopt a neutron optical method with a modified optical potential, in which the contrast between layers is reduced, and the potential around the layer boundary is smoothed. It is shown that with a suitable choice of calculation parameters, experimental reflectivity of a supermirror is well reproduced by the calculation.