LABORATORY EXAFS IN A DISPERSIVE MODE

被引：8
|
作者：
BUSCHERT, R
GIARDINA, MD
MERLINI, A
BALERNA, A
MOBILIO, S
机构：
[1] ISPRA ESTAB,COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,DIV PHYS,I-21020 ISPRA,ITALY
[2] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY
来源：
JOURNAL OF APPLIED CRYSTALLOGRAPHY | 1988年 / 21卷 / 02期
关键词：
Spectrometers - Extended X ray absorption fine structure spectroscopy - Absorption spectra;
D O I：
10.1107/S0021889887008641
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A laboratory dispersive mode spectrometer, capable of operating in either the analysing crystal transmission mode or a reflection mode, is described. Extended X-ray absorption fine structure (EXAFS) spectra of Re and ReO2, obtained in the transmission mode, compare favourably with those from a scanning spectrometer at a synchrotron source. Factors affecting resolution, intensity and background in this transmission mode are discussed. Experiments with asymmetric reflection geometries, which have shown both improved resolution for X-ray absorption near edge structure (XANES) and reduced collection times, are reported. Methods of reducing backgrounds due to multiple Bragg reflections and Compton scattering are proposed. © 1988, Wiley-Blackwell. All rights reserved.
引用
收藏
页码：79 / 85
页数：7
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