A magnetic neutron lens based on an extended Halbach-type permanent sextupole magnet

被引：10
|
作者：
Oku, Takayuki [1 ]
Yamada, Satoru
Sasao, Hajime
Suzuki, Jun-ichi
Shinohara, Takenao
Hirota, Katsuya
Ikeda, Kazuaki
Tsuzaki, Tsuyosi
Kiyanagi, Yoshiaki
Furusaka, Michihiro
Shimizu, Hirohiko M.
机构：
[1] JAEA, Tokai, Ibaraki 3191195, Japan
[2] RIKEN, Wako, Saitama 3510198, Japan
[3] NEOMAX Co Ltd, Egawa, Osaka 6180013, Japan
[4] Hokkaido Univ, Sapporo, Hokkaido 0608628, Japan
[5] KEK, Tsukuba, Ibaraki 3050801, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 385-86卷
关键词：
neutron focusing lens; magnetic neutron lens; polarized neutron; SANS; focusing SANS;
D O I：
10.1016/j.physb.2006.05.416
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have developed a magnetic neutron lens (MNL) based on an extended Halbach-type permanent sextupole magnet. The effective aperture size is 30 mm in diameter and the length is 2400 mm. The sextupole magnetic field distribution vertical bar B vertical bar = (G/2) r(2) with the gradient coefficient G = 10,660 +/- 530 T/m(2) are generated inside the magnet, where r is the distance from the magnet center axis. The neutron-focusing property is investigated by using pulsed polarized neutrons. The obtained results are discussed in comparison with numerical simulation results. The application to the focusing-geometry small-angle neutron scattering experiments is discussed. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1225 / 1228
页数：4
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