A Blazed-Grating Scanning Spectrometer for Ultrasoft X-Rays Suitable for Use in an Electron Microprobe
The importance of operating within the blaze angle is emphasized by a series of measurements of ultrasoft X-rays obtained with a new grazing-incidence, grating spectrometer. A formula to maximize output intensity has been derived which predicts a variation of input angle with changes of wavelength. The spectrometer is designed to utilize this function. The grating spectrometer was installed into an Applied Research Laboratories Analyst’s Microprobe. Since the AMX furnishes an ultrasoft spectrometer with a fatty acid pseudocrystal as standard equipment, it is possible to compare the two systems simultaneously on the same sample at the same wavelength. The grating and crystal systems are compared for peak intensity and line-to-background ratio.
KeywordsSlit Width Critical Angle Grating Monochromator Input Angle Crystal Spectrometer
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