Jonas, AdrianMeurer, ThomasKanngießer, BirgitMantouvalou, Ioanna2022-05-052022-05-052018-02-260034-6748https://depositonce.tu-berlin.de/handle/11303/16823http://dx.doi.org/10.14279/depositonce-15601The resolving power and relative efficiency of two off-axis reflection zone plates (RZPs) in the soft X-ray range between 1 nm and 5 nm were investigated. RZPs focus only a very narrow bandwidth around the design wavelength. By misaligning the RZP, the focused wavelength can be tuned through a much wider spectral range. Using a laser-produced plasma source, we demonstrate that a single RZP can be efficiently used for spectroscopy at arbitrary wavelengths in the investigated soft X-ray range.en530 PhysikNEXAFSPump-ProbeLaserplasmaquellepump probelaser produced plasma sourceArticle1089-7623