FAME A New Beamline for XRay Absorption Investigations of VeryDiluted Systems of Environmental, Material and Biological Interests

• DOI: 10.1238/physica.topical.115a00970
• Publication Date: 2005-09-20T14:06:21Z
• Authors: O. Proux; X. Biquard; E. Lahera; J.J. Menthonnex; A. Prat; O. Ulrich; Y. Soldo; P. Trvisson; G. Kapoujyan; G. Perroux; P. Taunier; D. Grand; P. Jeantet; M. Deleglise; JP. Roux; JL. Hazemann
• Keywords: Monochromator

FAME is the French Absorption spectroscopy beamline in Material and Environmental sciences at ESRF (France), operational since September 2002. Technically speaking, source a 0.85 T bending magnet main optical element two-crystals monochromator using either Si(111) or Si(220) monocrystals so that available energy ranges from 4 to 40 keV. The first crystal liquid nitrogen cooled order avoid thermal bump thus preserve resolution. second dynamically bent during scan focus beam horizontal plane. Two bendable mirrors are located before after monochromator, for beam-collimation (to optimize resolution) vertical focalization, respectively. During scans, on sample kept constant position size (around 150 × 200 μm2, V H). high flux combined with sensitivity of our 30-elements fluorescence detector allow decrease detection limit down 10 ppm around less than monolayer. Moreover, quick-EXAFS acquisition operational: time may be reduced 30s.