Comparison of Bragg-Edge neutron-transmission spectroscopy at ISIS and LANSCE
Comparison of Bragg-Edge neutron-transmission spectroscopy at ISIS and LANSCE
复制标题
ISIS 和 LANSCE 布拉格边中子透射谱的比较
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
S. Vogel
中科院分区：
文献类型：
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作者：
J. Santisteban;L. Edwards;H. Priesmeyer;S. Vogel
摘要：多晶材料的中子透射谱中出现的布拉格边代表了2θ=180°时的相干散射响应。结构信息，如纹理，相含量或应变可以从这些边缘的强度和位置导出。透射衍射仪最近已在LANSCE和ISIS开发，分别用于研究相变和应变成像的动力学。由于两种仪器使用的中子慢化剂和飞行路径不同，入射中子谱也不同。本文报道了这两种仪器及其分析软件的比较研究。
Abstract.The Bragg edges appearing in the neutron-transmission spectra of a polycrystalline material represent its coherent-scattering response at 2θ=180°. Structural information such as texture, phase content or strain may be derived from the intensity and position of these edges. Transmission diffractometers have been recently developed at both LANSCE and ISIS and used for studying the dynamics of phase transformations and strain imaging, respectively. The incident neutron spectra vary due to the different neutron moderators and flight paths used in the two instruments. This paper reports a comparative study of the two instruments and their analysis software.