Generalization of the classical xyz-polarization analysis technique to out-of-plane and inelastic scattering.
Generalization of the classical xyz-polarization analysis technique to out-of-plane and inelastic scattering.
复制标题
将经典 xyz 偏振分析技术推广到面外和非弹性散射。
DOI：
10.1063/1.4819739
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Ken H. Andersen
中科院分区：
文献类型：
--
作者：
Georg Ehlers;J. R. Stewart;A. Wildes;P. Deen;Ken H. Andersen
纵向（“xyz”）偏振分析技术多年来已成功用于研究热中子衍射实验和冷中子衍射实验中的无序磁性材料。该技术允许同时且明确地分离核、磁和核自旋非相干对散射的贡献。近年来看到的技术进步，例如覆盖大探测器立体角的偏振 (3)He 分析仪单元的可用性、在多探测器中探测面外散射的能力以及可用光束发散度的显着增加，都需要该方法的推广。本文将给出进行中子极化分析的形式的一般处理，描述了未来现代衍射仪或具有大面积多探测器覆盖的非弹性光谱仪的可能使用方法。
The technique of longitudinal ("xyz") polarization analysis has been used successfully for many years to study disordered magnetic materials in thermal and cold neutron diffraction experiments. The technique allows the simultaneous and unambiguous separation of the nuclear, magnetic, and nuclear spin-incoherent contributions to the scattering. The technical advances seen in recent years, such as the availability of polarized (3)He analyzer cells to cover a large detector solid angle, the ability to detect out-of-plane scattering in a multi-detector, and a significant increase of the usable beam divergence, call for a generalization of the method. A general treatment of the formalism for carrying out neutron polarization analysis will be given in this paper, which describes a possible method of usage at a future, modern diffractometer or inelastic spectrometer with large area multi-detector coverage.