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

页码：79 / 85

页数：7

共 26 条

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[2] TRANSFERABILITY OF PHASE-SHIFTS IN EXTENDED X-RAY ABSORPTION FINE-STRUCTURE [J].