Permanent magnetic field-prism polarizer for perfect crystal neutron interferometers

被引：10
|
作者：
Badurek, G
Buchelt, RJ
Kroupa, G
Baron, M
Villa, M
机构：
[1] Univ Technol, Inst Phys Nucl, A-1020 Vienna, Austria
[2] Austrian Univ, Inst Atom, Vienna, Austria
[3] Inst Max Von Laue Paul Langevin, Grenoble, France
来源：
PHYSICA B | 2000年 / 283卷 / 04期
关键词：
neutron polarizers; perfect crystals; neutron interferometry;
D O I：
10.1016/S0921-4526(00)00347-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Spin-dependent bi-refringence of neutrons upon passage through the air gap of a prismatically shaped permanent magnet yoke is used to split a thermal neutron beam in two polarized sub-beams with slightly different directions. This method is ideal to polarize the neutrons within perfect crystal interferometers without loss of intensity. Using a sequential arrangement of two such prisms a splitting larger than twice the rocking-curve width of a perfect crystal Mach-Zehnder-type neutron interferometer has been achieved, yielding a beam polarization of about 97%. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：389 / 392
页数：4
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