New geochronological history of the Mbuji-Mayi Supergroup (Proterozoic, DRC) through U-Pb and Sm-Nd dating

peer reviewe

How to date a sedimentary serie: Different approaches to better constrain the diversification of early eukaryotes in Central Africa (Mbuji-Mayi Supergroup, Proterozoic, DRCongo)

Peer reviewe

X-ray multilayer monochromator with enhanced performance

International audienceAn x-ray multilayer monochromator with improved resolution and a low specular background is presented. The monochromator consists of a lamellar multilayer amplitude grating with appropriate parameters used at the zeroth diffraction order. The device is fabricated by means of combining deposition of thin films on a nanometer scale, UV lithography, and reactive ion etching. The performance of this new monochromator at photon energies near 1500 eV is shown

Improvement of low-level trace element analysis with the electron microprobe

International audienc

Redox kinetics of iron in alkali silicate glasses exposed to ionizing beams: Examples with the electron microprobe

International audienc

Geochemical processes evidenced by an EPMA trace element study of pyroxenes and amphiboles

International audienc

Evidence of migrating fluids in the upper mantle: an EPMA investigation of trace elements and oxidation ratios of glasses and clinopyroxenes in mantle xenoliths from Massif Central (France)

International audienc

Xenolith glasses: a key to deciphering mantle processes ?

International audienc

Ionizing irradiation effects on the redox state of alkali silicate glasses.

International audienc