FAME, the French Absorption spectroscopy beamline in Material and Environmental science, is dedicated to X-ray absorption spectroscopy. FAME covers a wide variety of scientific fields (materials science, biophysics, chemistry) but focuses mainly in geochemical sciences where, in most cases, the probed elements are highly diluted.

 

FAME being a bending magnet beamline, the optical elements have been designed in order firstly to maximize the photon flux on the sample and secondly to optimize the beamline stability and reduce the non-statistical noise (Proux et al. Journal of Synchrotron Radiation 13 (2006) 59-68). Moreover, for an optimal acquisition of XAS spectra on diluted elements, the intense x-ray beam on the sample needs to be associated with a highly sensitive detection system: fluorescence detection is achieved with a 30-element Canberra Ge solid state detector.

 

Opened to users since 2002, the beamline offers several sample environments, either to improve the measurements (helium cryostat), either to carry out in-situ measurements (HP-HT vessel, gaseous cell), and can accept many other apparatus.

 

FAME is one of the French CRG beamlines at the ESRF: beamtime can be asked boththrough the ESRF and the Soleil program committees.

Beamline Energy Resolution
6 * 10-1 [eV] @ 12000 [eV]
Beamline Energy Range
4900 - 40000 [eV]
Max Flux On Sample
1 * 1012 [ph/s] @ 12000 [eV]
Spot Size On Sample Hor
15 - 300 [um]
Spot Size On Sample Vert
15 - 200 [um]
Photon Sources

0.8T ESRF BM

Type
Bending Magnet
Available Polarization
Linear horizontal
Monochromators

FAME monochromator

Energy Range
4900 - 40000 [eV]
Type
Si[220] 2-crystals, liquid nitrogen cooled, sagittal bending (horizontal focussing).
Pre-focusing Mirror Type
Mirror for vertical collimation and harmonic rejection: Rh-coated, variable incidence angle (2.5 to 7mrad) and variable curvature.
Refocusing Mirror Type
Mirror for vertical focussing and harmonic rejection: Rh-coated, variable incidence angle (2.5 to 7mrad) and variable curvature.
Endstations or Setup

EXAFS

Base Pressure
1 * 103 [mbar]
Detectors Available
Fluorescence detection mode
Transmission detection mode
Endstation Operative
Yes

Sample

Sample Type
Crystal, Amorphous, Powder, Liquid

Manipulator or Sample stage

Positioning Precision
X = 100 [um], Y = 1 [um], Z = 1 [um]

Sample Environment

Pressure (min)
1 [bar]
Pressure (Max)
2000 [bar]
Temperature
293 - 1500 [K]
Temperature
4 - 100 [K]
Detectors

Fluorescence detection mode

Type
Solid State Detector
Description
Canberra 30-element Ge detector (resolution about 300eV)
Passive or Active (Electronics)
Active

Detection

Detected Particle
Photon

Transmission detection mode

Type
Diodes
Description
Si diodes collecting photons scattered by air in a black chamber for both incident and transmited intensity measurements
Passive or Active (Electronics)
Active

Detection

Detected Particle
Photon
contacts
Jean-Louis HAZEMANN
Olivier PROUX
Isabelle KIEFFER
Mauro ROVEZZI
Denis TESTEMALE
Techniques
Absorption
  • EXAFS
  • NEXAFS
Emission or Reflection
  • X-ray fluorescence (XRF)
Disciplines
Chemistry
  • Biochemistry
  • Catalysis
  • Electrochemistry
  • Green Chemistry
  • Physical Chemistry
Earth Sciences & Environment
  • Geology
  • Mineralogy
  • Natural disaster, Desertification & Pollution
  • Plant science
  • Water sciences/Hydrology
Energy
  • Sustainable energy systems
Humanities
  • Cultural Heritage
Life Sciences & Biotech
  • Molecular and cellular biology
Material Sciences
  • Other - Material Sciences
Physics
  • Hard condensed matter - structures
control/Data analysis
Control Software Type
  • SPEC
Data Output Type
  • spectra (X: Energy, Y: absorption in fluorescence, transmission, temperature of measurement...)
Data Output Format
  • TXT
Softwares For Data Analysis
  • Athena (XAS normalizaton), Artemis (EXAFS analysis), FDMNES (XANES analysis)
Equipment That Can Be Brought By The User
The sample holder can manage up to 100kg and space is available around the focal plane. Contact the beamline staff to discuss.
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