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X-Ray Spectrometry in Electron Beam Instruments (Hardcover, and ed.)
Loot Price: R5,757
Discovery Miles 57 570
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X-Ray Spectrometry in Electron Beam Instruments (Hardcover, and ed.)
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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."
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