Development of wide band neutron monochromator consisting of a stack of multilayers

被引：0

作者：

Kawabata, Y ^{[1
]}

Somemiya, K

Tasaki, S

机构：

[1] Kyoto Univ, Inst Res Reactor, Kumatori, Osaka 5900494, Japan

[2] Kyoto Univ, Fac Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2000年 / 37卷 / 01期

关键词：

monochromators; multilayer; stack; slow neutrons; supermirrors; nickel; titanium; neutron reflectivity;

D O I：

10.1080/18811248.2000.9714872

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A wide band neutron monochromator consisting of a stack of four multilayers an two Si wafers has been developed. One multilayer has 201 Ni/Ti layers. The layer thickness is gradually changed in order to extend the neutron reflection wavelength range similar to a supermirror. Multilayers were fabricated by the vacuum evaporation methods on each side of a Si substrate of 225 mu m in thickness. Neutron reflectivity was measured by the theta-2 theta reflectometer using cold neutrons. The neutron reflection wavelength was broadened to 19-40 nm by this stack from 26-40 nm of one multilayer.

引用

页码：102 / 106

页数：5

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