MONOCHROMATOR-INDUCED GLITCHES IN EXAFS DATA .1. TEST OF THE MODEL FOR LINEARLY TAPERED SAMPLES

被引：13
|
作者：
BRIDGES, F
LI, GG
WANG, X
机构：
[1] University of California, Santa Cruz
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1992年 / 320卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0168-9002(92)90949-5
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
When EXAFS samples are slightly nonuniform in thickness, spikes, referred to as "glitches", are observed in the data. Such features are intrinsic to data collected using crystal monochromators. We have recently developed a model to show why such features, persist in ratioed data. Here we test the predictions for linearly tapered samples. Our results suggest that the glitch amplitude can be significantly reduced by taking a second spectrum with the sample inverted, and then averaging the two spectra.
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页码：548 / 555
页数：8
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