Reflecting Variable Bent Crystal Spectrometer

Elion, Herbert A.; Ogilvie, R. E.

doi:10.1063/1.1717952

Cited by 10 publications

(2 citation statements)

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“…Also in the early 1960s, Elion and Ogilvie built a spectrometer that, like Duncumb's, eliminated the need to translate the crystal (Elion and Ogilvie, 1962). This spectrometer, however, maintained the focal circle relationships of Eq.…”

Section: Spectrometer Of Elion and Ogilviementioning

confidence: 99%

X-ray Crystal Spectrometers and Monochromators in Microanalysis

Wittry

Barbi²

2001

Microsc Microanal

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Castaing’s successful implementation and application of the electron probe microanalyzer in 1950 stimulated a flurry of development activity around the world. The later versions of this instrument represented a truly international effort, with significant contributions by scientists from Europe, Asia, and North America. If the probe-forming system of the instrument was its heart, the X-ray wavelength spectrometer was its soul. This article reviews some of the history of spectrometer developments—lthrough the “golden years” of microprobe development, namely the dozen or so years following the publication of Castaing’s thesis, to the present. The basic physics of spectrometer and crystal design is reviewed. Early experimental devices, such as those developed by Castaing, Borovskii, Wittry, Duncumb, and Ogilvie are reported. Examples of commercial spectrometers such as those by ARL, MAC, Microspec, and Peak are described. Recent developments such as the combination of grazing-incidence optics with flat crystal spectrometers are noted, and the properties and uses of doubly curved crystals are discussed. Finally, the continued development of doubly curved crystal configurations, such as the “Wittry geometry” for scanning monochromators, and point-to-point focusing diffractors for producing small monochromatic X-ray probes to provide improved detection limits for microanalysis are considered.

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Section: Spectrometer Of Elion and Ogilviementioning

confidence: 99%

X-ray Crystal Spectrometers and Monochromators in Microanalysis

Wittry

Barbi²

2001

Microsc Microanal

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“…A unique curved crystal spectrometer has been developed by Elion (147) in which focusing is maintained by changing the radius of curvature of a mica crystal as the spectrometer rotates. This spectrometer therefore provides a constant x-ray take-off angle without the complicated motions required in the linear-type spectrometer.…”

Section: Coatingsmentioning

confidence: 99%