A compact spectrometer based on a segmented conical crystal analyzer

J. ROBLEDO; J. J. LEANI; H. J. SÁNCHEZ; C. A. PÉREZ

Congreso; 30 Reunion Anual de Usuarios; 2020

LNLS/CNPEM

In this work, we present the fabrication and commissioning of a spectrometerbased on a crystal analyzer with an innovative geometry at the D09B-XRFbeamline of the LNLS. The crystal's geometry is composed of several segments ofconically bent Si(220) crystals with different radii[1]. Among its advantages are:1.) It reaches an energy resolution of around 8 eV for the Mn K-alpha1 line,which is at least an order of magnitude better than the commonly used energydispersive spectrometers;2.) it allows for the simultaneous acquisition of a 2 keV window, from 5 to 7 keV,being adjustable by changing the crystal's parameters;3.) it is compact, with a sample-detector distance of only 146 mm.