Abstract: The present invention relates to a method and device for determining the energetic composition of electromagnetic waves. It is the object of the present invention to provide a method and device for X-ray spectroscopy that allows simultaneous detection of the individual energies at a comparatively higher resolution and/or across a comparatively wider energy range. According to the invention, at least one reflective zone plate (12) is used that comprises a multitude of predefined wavelength-selective regions (14) arranged next to one another, wherein the wavelength-selective regions (14) each include a multitude of reflecting arched portions (20), which extend exclusively and continuously across the respective wavelength-selective region (14).

Abstract: A device for measuring resonant inelastic X-ray scattering of a sample with a single exposure step includes a first reflection zone plate configured to be irradiated first and foremost by an X-ray beam. The device also includes a sample arranged at the focus of the diffracted radiation from the first reflection zone plate. The device additionally includes a second reflection zone plate arranged at a distance of its focal length from the sample. The device further includes a detector arranged at the focal plane of the diffracted radiation of the second reflection zone plate and configured to perform spatially-resolved two-dimensional detection. The reflection zone plates are arranged cross-dispersively. The wavelength ranges of the reflection zone plates are tuned to one another corresponding to an absorption edge of an element of the sample.

Abstract: The present invention relates to a method and device for determining the energetic composition of electromagnetic waves. It is the object of the present invention to provide a method and device for X-ray spectroscopy that allows simultaneous detection of the individual energies at a comparatively higher resolution and/or across a comparatively wider energy range. According to the invention, at least one reflective zone plate (12) is used that comprises a multitude of predefined wavelength-selective regions (14) arranged next to one another, wherein the wavelength-selective regions (14) each include a multitude of reflecting arched portions (20), which extend exclusively and continuously across the respective wavelength-selective region (14).