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Detection and Spectroscopy of Long Wavelength X-Rays

Published online by Cambridge University Press:  06 March 2019

William L. Baun
William L. Baun*
Affiliation:
Air Force Materials Laboratory (MAYA) Wright-Patterson Air Force Base, Ohio 45433
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Abstract

Instrumentation for spectrometry in the long wavelength X-ray region has been improved significantly in the last several years. In the area of excitation of soft X-rays, many changes have taken place. Secondary excitation source windows have been made much thinner and high power windowless and ultra thin windowed continuously pumped X-ray tubes have been developed. One source has been described which allows a choice of either primary or secondary excitation. Cold cathode techniques have been developed in which pressure control is achieved using an automatic pressure controller. Primary electron excitation has been revived and has become very important mainly due to the popularity of electron microbeam probe analysis. In the area of spectral dispersion, many improvements and innovations have been seen, recently in both grating and crystal spectrometers. Organic single crystals have been grown having 2d spacings up to about 100Ǻ and soap films have been fabricated with 2d spacing as large as 165Ǻ, allowing crystal spectrometers to be used to about 160Ǻ.

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Type
Research Article
Information
Advances in X-Ray Analysis , Volume 13: Eighteenth Annual Conference on Applications of X-ray Analysis, August 6-8, 1969 , 1969, pp. 49 - 67
Copyright
Copyright © International Centre for Diffraction Data 1969

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