High flux and high resolution VUV beam line for synchrotron radiation

A beam line has been optimized for high flux and high resolution in the wavelength range from 30 to 300 nm. Sample chambers for luminescence spectroscopy on gaseous, liquid and solid samples and for photoelectron spectroscopy have been integrated. The synchrotron radiation from the storage ring DORIS (at DESY, Hamburg) emitted into 50 mrad in horizontal and into 2.2 mrad in vertical direction is focused by a cylindrical and a plane elliptical mirror into the entrance slit of a 2 m normal incidence monochromator. The light flux from the exit slit is focused by a rotational elliptic mirror onto the sample yielding a size of the light spot of 4×0.15 mm$^2$. The light flux at the sample reaches 7×10$^{12}$ photons nm$^{−1}$ s$^{−1}$ at 8 eV photon energy for a current of 100 mA in DORIS. A resolution of 0.007 nm has been obtained