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Soft X-Ray Instrumentation for Space Experiments
Published online by Cambridge University Press: 06 March 2019
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This paper will discuss some of the techniques used for soft x-ray astronomy (10 kev - 0.5 kev). A more extensive treatment will be found in review papers by Giacconi, Reidy, Vaiana, Van Speybroeck and Zehnpfennig and by Giacconi, Gursky and Van Speybroeck. The earliest experiments in x-ray astronomy were performed using mechanically collimated small area ( ∼ 10 cm2) geiger tubes flown in open stabilized rockets. Subsequent improvements in sensitivity have resulted from the use of much larger ( ∼ 1000 cm2) counters and improved background rejection techniques. Important spectral information has been obtained by using gas counters which are operated as proportional counters rather than as geiger tubes and the development of the modulation collimator has significantly improved the obtainable angular resolution. The most promising new technique for x-ray astronomy is the development of grazing incidence x-ray optics .
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- Copyright © International Centre for Diffraction Data 1969
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