RETRIEVAL OF PHASE INFORMATION IN NEUTRON REFLECTOMETRY

被引：64

作者：

DEHAAN, VO ^{[1
]}

VANWELL, AA ^{[1
]}

ADENWALLA, S ^{[1
]}

FELCHER, GP ^{[1
]}

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.52.10831

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron reflectometry can determine unambiguously the chemical depth profile of a thin film if both phase and amplitude of the reflectance are known. The recovery of the phase information is achieved by adding to the unknown layered structure a known ferromagnetic layer. The ferromagnetic layer is magnetized by an external magnetic field in a direction lying in the plane of the layer and subsequently perpendicular to it. The neutrons are polarized either parallel or opposite to the magnetic field. In this way three measurements can be made, with different (and known) scattering-length densities of the ferromagnetic layer. The reflectivity obtained from each measurement can be represented by a circle in the (complex) reflectance plane. The intersections of these circles provide the reflectance.

引用

页码：10831 / 10833

页数：3

共 18 条

[1] PHASE PROBLEM [J].