An alternative neutron diffractometer performance, which documents the feasibility of using a high-resolution three-axis neutron diffractometer for elastic and plastic deformation studies of bulk metallic polycrystalline samples, is presented. Contrary to the conventional double-axis setting, the suggested alternative consists of an unconventional three-axis set-up employing a bent perfect crystal monochromator and an analyzer with a polycrystalline sample in between. Though the alternative is, for measurements, much more time-consuming, its sensitivity to the change of the diffraction angle of the sample is, however, substantially higher and permits also plastic deformation studies on the basis of analysis of the diffraction line profiles. Moreover, much larger widths (up to 10 mm) of the irradiated gauge volumes can be investigated when just slightly affecting the angular resolution properties of the experimental setting.

中文翻译：

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用于应变/应力测量的替代中子衍射仪性能

介绍了另一种中子衍射仪性能，该性能证明了使用高分辨率三轴中子衍射仪对块状金属多晶样品进行弹性和塑性变形研究的可行性。与传统的双轴设置相反，建议的替代方案包括非常规的三轴设置，该设置采用弯曲的完美晶体单色器和中间夹有多晶样品的分析仪。尽管对于测量而言，替代方案更耗时，但其对样品衍射角变化的敏感性要高得多，并且还允许基于衍射线轮廓分析进行塑性变形研究。而且，