Abstract
A simple grazing-incidence plane grating monochromator configuration for the monochromatization of soft X-ray synchrotron radiation is presented. The only components between the entrance and exit slits are one or more exchangeable spherical mirrors, followed by a plane grating. A particular spherical mirror and the grating can be rotated independently around fixed axes in such a way that the resulting focus will remain at a fixed position. This configuration can be installed in the simple mechanical scheme of the optically more complex SX-700. Its total tuning range with three mirrors will cover 1–30 nm, while with one particular configuration the large range 3–20 nm will be available in a continuous scan without the need for component exchange. For wavelengths larger than 2 nm it will provide resolving powers in excess of 5000. The predicted performance for the instrument transmission and for higher harmonic suppression is very promising.
Published Version
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