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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Neutron Reflectometry with Vector Polarization Analysis: First Steps
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Neutron Reflectometry with Vector Polarization Analysis: First Steps

机译：矢量极化分析的中子反射法：第一步

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摘要

The most detailed and reliable information about the magnetic state (magnetization depth profiles) of layers can be obtained by neutron reflectometry with vector polarization analysis. Two schemes of realization of this technique are considered. Precession coils designed to manipulate the polarization vector of monochromatic beams are used in scheme I. This scheme was tested at the neutron reflectometer NR-4M (PNPI, Gatchina). The earliest experimental data on the polarization vector rotation are reported, giving direct evidence of the wave function phase shift of a massive particle, the neutron, under total reflection. The basic elements for scheme II are remanent supennirrors. This scheme is designed for use with a white beam and is advantageous for pulse neutron sources. The effect of stray fields produced by remanent supermirrors on the neutron polarization has been theoretically and experimentally evaluated; efficient ways of compensating the stray fields are proposed.
机译：关于层的磁状态（磁化深度分布）的最详细，最可靠的信息可以通过带有矢量极化分析的中子反射法获得。考虑了实现该技术的两种方案。方案I中使用了设计用于操纵单色光束偏振矢量的旋进线圈。该方案在中子反射仪NR-4M（PNPI，Gatchina）上进行了测试。报告了有关极化矢量旋转的最早实验数据，直接证明了全反射下大质量粒子（中子）的波函数相移。方案二的基本要素是剩余的后继者。该方案设计用于白光束，对脉冲中子源有利。从理论上和实验上评估了剩余的超级镜产生的杂散场对中子极化的影响。提出了补偿杂散场的有效方法。

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