Development of micro-XANES mapping in the diamond anvil cell - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Journal of Synchrotron Radiation Year : 2009

Development of micro-XANES mapping in the diamond anvil cell

Abstract

Energy-dispersive X-ray absorption spectroscopy is now a well established method that has been applied to a broad range of applications. At the energy-dispersive EXAFS beamline of the ESRF, ID24, the recently achieved 5 × 5 µm focal spot combined with fast acquisition has allowed complex and non-uniform samples to be mapped and images to be obtained where each pixel contains full XAS information. This method has been applied to a study under extreme conditions of pressure and temperature in a diamond anvil cell in transmission mode. The case study was the investigation of the Fe K-edge XANES of (Mg,Fe)SiO3-perovskite and (Mg,Fe)O-ferropericlase on decomposition of the spinel-structured olivine [[gamma]-(Mg,Fe)2SiO4] at 78 (3) GPa after laser heating at 2200 (100) K.

Dates and versions

insu-00411708 , version 1 (28-08-2009)

Identifiers

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Giuliana Aquilanti, Sakura Pascarelli, Olivier Mathon, Manuel Muñoz, Olga Naryginac, et al.. Development of micro-XANES mapping in the diamond anvil cell. Journal of Synchrotron Radiation, 2009, 16 (3), pp.376-379. ⟨10.1107/S0909049509007134⟩. ⟨insu-00411708⟩
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