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X-Ray Spectrometry in Electron Beam Instruments

  • David B. Williams
  • Joseph I. Goldstein
  • Dale E. Newbury

Table of contents

  1. Front Matter
    Pages i-xviii
  2. R. A. Sareen
    Pages 33-51
  3. R. B. Mott, J. J. Friel
    Pages 127-157
  4. S. J. B. Reed
    Pages 221-238
  5. G. F. Bastin, H. J. M. Heijligers
    Pages 239-257
  6. Back Matter
    Pages 369-372

About this book

Introduction

From its early days in the 1950s, the electron microanalyzer has offered two principal ways of obtaining x-ray spectra: wavelength dispersive spectrometry (WDS), which utilizes crystal diffraction, and energy dispersive spectrometry (EDS), in which the x-ray quantum energy is measured directly. In general, WDS offers much better peak separation for complex line spectra, whereas EDS gives a higher collection efficiency and is easier and cheaper to use. Both techniques have undergone major transformations since those early days, from the simple focusing spectrometerand gas proportional counter of the 1950s to the advanced semiconductor detectors and programmable spectrometersoftoday. Becauseofthesedevelopments, thecapabilities and relative merits of EDS and WDS techniques have been a recurring feature of microprobeconferences for nearly40 years, and this volume bringstogetherthepapers presented at the Chuck Fiori Memorial Symposium, held at the Microbeam Analysis Society Meeting of 1993. Several themes are apparent in this rich and authoritative collection of papers, which have both a historical and an up-to-the-minute dimension. Light element analysis has long been a goal of microprobe analysts since Ray Dolby first detected K radiation with a gas proportional counter in 1960. WDS techniques (using carbon lead stearate films) were not used for this purpose until four years later. Now synthetic multilayers provide the best dispersive elements for quantitative light element analy­ sis-still used in conjunction with a gas counter.

Keywords

X-ray crystal environment modeling

Editors and affiliations

  • David B. Williams
    • 1
  • Joseph I. Goldstein
    • 2
  • Dale E. Newbury
    • 3
  1. 1.Lehigh UniversityBethlehemUSA
  2. 2.University of Massachusetts at AmherstAmherstUSA
  3. 3.National Institute of Standards and TechnologyGaithersburgUSA

Bibliographic information

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