A systematic design procedure is outlined which allows the achievement of maximum resolving power of a grating spectrometer for soft X-ray emission. Starting with a finite overall size the source size limit is balanced against the detector limited resolving power to find the optimal distance between entrance slit or image, focusing mirror, varied line space grating, and detector. An example is given showing ray traces of an instrument of 2.5 meter overall size and a resolving power of 10,000. A tangential elliptical mirror permits an optimal design to be achieved.
展开▼
