Zone-Plate Based Nanospectroscopy with Soft X-Rays at the SLS

With the advance of nanostructuring techniques and the availability of third-generation synchrotron sources,Fresnel-type zone plate optics is widely used for nanospectroscopic investigations with resolutions of several 10 nm.Whereas hard X-rays commonly use difiraction or elemental contrast (e.g. using X-ray °uorescence), soft X-raysare favored to utilize the spectroscopic contrast in the near-edge region of the absorption edge. In particular, forsoft materials, the relevant C-, N- and O 1