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Final rept. for 1 May 1958-31 May 1964
OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
Pagination or Media Count:
The results of the investigation show that synthetic quartz can be obtained with spectrometric properties which are sufficiently good to permit them to be used as replacements for natural quartz in high-resolution x-ray spectroscopy. It is possible that special high purity, high Q, synthetic quartz may prove to be even better than any of the crystals, synthetic or natural, investigated for this thesis. It has also been shown that a pair of crystals can be adequately characterized only by its complete rocking curve, and a comparison of these curves is the only reliable method of crystal selection. This has been pointed up by such apparent anomalies as two crystal pairs having the same 1,1 curve width and different 1,-1 curve widths, and two crystal pairs having the same per cent reflection and different 1,-1 curve widths. The fact that the 1,-1 curve width for some crystal pairs changed in the relatively short time of five months indicates that if one wishes to make reliable resolving power corrections to observed spectra, he must keep a constant check on the shape of the 1,-1 curve. The effect of x-radiation damage on the x-ray reflection characteristics of natural quartz has been investigated. It has been found that there are no immediate effects, although the displaced electrons may catalyze surface corrosion and thus may help to produce the long-term deterioration effects which have been observed.
APPROVED FOR PUBLIC RELEASE