CRITICAL COMPARISON OF SOFT-X-RAY FLUORESCENCE DETECTORS FOR XAFS STUDIES IN THE 2 TO 4 KEV REGION

被引：6

作者：

FISCHER, DA ^{[1
]}

YANG, CY ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1990年 / 291卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(90)90045-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report a performance comparison of fluorescence detectors for XAFS in the soft-X-ray region. In particular, this comparison was made under the practical constraints of an existing hard-X-ray beamline (X-19A NSLS) double-crystal Si(111) monochromator with a 10-mil beryllium exit window. A critical comparison of an energy-dispersive proportional counter and an ionization chamber was performed above the sulfur K edge for a very dilute sample and a mixed-element system. Third-harmonic contributions and signal-to-background ratios are discussed, with the conclusion that an energy-dispersive proportional counter provides superior results under our beamline constraints. © 1990.

引用

页码：123 / 125

页数：3

共 6 条

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[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 291 (1-2) : 157 - 161

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