High pressure/high temperature cell for x-ray absorption and scattering techniques
- Laboratoire de Cristallographie, UPR5031, 25 Avenue des Martyrs, 38042 Grenoble Cedex 09, France and SNBL/ESRF, 6 Rue Jules Horowitz, BP 220, 38043 Grenoble Cedex 09 (France)
A high pressure/high temperature cell dedicated to x-ray absorption spectroscopy, small angle x-ray scattering, and inelastic x-ray scattering techniques is presented. The P and T parameters are controlled independently and their range allow the study of aqueous solutions (T{<=}500 deg. C and P{<=}2000 bar) and liquid metals and glasses (T{<=}1700 deg. C and P{<=}2000 bar). The autoclave technology is inspired from previous high pressure/high temperature equipments but great improvements are achieved. Original high pressure windows have been developed to ensure both pressure resistance and low absorbance combined with large angular aperture. Different configurations are available for the internal cell that contains the sample whether it is aqueous or not. As an example of the efficiency of the set-up, we present preliminary x-ray absorption results on 0.01 m FeCl{sub 3} aqueous solutions from ambient to supercritical conditions (375 deg. C and 300 bar). These low concentrations samples and low energy spectra (Fe K-edge is at 7112 eV) represent challenging experimental conditions.
- OSTI ID:
- 20646476
- Journal Information:
- Review of Scientific Instruments, Vol. 76, Issue 4; Other Information: DOI: 10.1063/1.1884188; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chemical speciation of inorganic compounds under hydrothermal conditions. 1998 annual progress report
Microstructure and hydrogen dynamics in hydrogenated amorphous silicon carbides