Polarization analysis for the 2D position-sensitive detector of the HADAS reflectometer in Julich

被引：16

作者：

Rücker, U ^{[1
]}

Bergs, W ^{[1
]}

Alefeld, B ^{[1
]}

Kentzinger, E ^{[1
]}

Brückel, T ^{[1
]}

机构：

[1] Forschungszentrum Julich, IFF Streumethoden, D-52425 Julich, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2001年 / 297卷 / 1-4期

关键词：

polarization analysis; position-sensitive detector; polarized neutron reflectivity; supermirror;

D O I：

10.1016/S0921-4526(00)00856-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A neutron reflectometer with polarization analysis is being built on the basis of the HADAS spectrometer in the neutron guide hall at the research reactor FRJ-2 (DIDO) in Julich. The new instrument is optimized for reflectivity and diffuse scattering measurements under grazing incidence on layered magnetic structures with thicknesses in the nm range. In order to measure diffuse scattering with polarization analysis, the 2D position-sensitive detector has been equipped with a polarization analyser that consists of a stack of supermirrors parallel to the scattering plane. First tests have revealed that the resolution of the instrument is not reduced by the polarization analyser. A flipping ratio of 20 has been achieved already during the first experiment. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：140 / 142

页数：3