A 5-m grating spectrograph for studying molecular x-ray fluorescence spectra

Abstract
A variable grazing incidence 5‐m focal length grating spectrograph has been assembled and fitted with a thin window Henke x‐ray tube. With a closely coupled sample to anode arrangement the speed of the instrument at 0 K emission at equivalent instrumental resolution is approximately on par with a 2‐m spectrometer’s response which uses the DORIS storate ring at DESY as a source.