Pulsed X-ray and /spl gamma/ rays irradiation effects on polarization-maintaining optical fibers

Autor: M. Vie, B. Azais, J. Keurinck, P. Charre, Jacques Meunier, J.-L. Derep, Youcef Ouerdane, Aziz Boukenter, Sylvain Girard

Publikováno v: IEEE Transactions on Nuclear Science. 51:2740-2746

We studied the sensitivities at 1.55 /spl mu/m of three polarization-maintaining (PM) and three unstressed single-mode (SM) optical fibers under pulsed X-ray (/spl sim/1 MeV) and steady-state /spl gamma/-ray (/spl sim/1 MeV) radiation. Our results sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e928ded77e64b4d4574d9a274d9661a7
https://doi.org/10.1109/tns.2004.835103

Impact damage on silicon carbide : first results

Autor: J.-L. Derep, C. Cottenot, P. Riou, L. Beylat

Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1994, 04 (C8), pp.C8-281-C8-287. ⟨10.1051/jp4:1994842⟩

L'objectif de ce travail est d'identifier les mecanismes d'endommagement d'une ceramique lors d'un impact. Dans de nombreux cas, l'amorcage et la propagation de l'endommagement se trouvent localises dans le cone de fissuration de Hertz [1]. Aussi, le

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbdaf19de70a64c0a6c2eacaa4284660
https://doi.org/10.1051/jp4:1994842

A new microstructure in chromium—carbon coatings

Autor: J. L. Derep

Publikováno v: Philosophical Magazine Letters. 65:167-172

Cr—C coatings made by physical vapour deposition techniques have been observed by transmission electron microscopy and X-ray diffraction. At a carbon concentration of 40 at.%, the grains are well defined. Their structures consist of very small orde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6b78d8cdb17001aae6bdc788e3cd90d
https://doi.org/10.1080/09500839208207531

Structures and composition before and after annealing of coatings in the Cr–C binary system produced by reactive physical deposition

Autor: J. L. Derep, G. Cholvy

Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 3:2378-2383

Coatings in the Cr–C binary system are deposited by reactive physical vapor deposition. Two types of deposition were used in an argon–methane atmosphere: chromium reactive evaporation by arc discharge and rf reactive sputtering. The objective of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6ce2925e79a433cd84c6ee6ec7bf091
https://doi.org/10.1116/1.572885

Structure and properties of zirconia-alumina plasma sprayed coatings

Autor: M. C. Foujanet, J. L. Lumet, F. Nardou, J. L. Derep

Publikováno v: S. Meriani(University of Trieste, Italy) and C. Palmonari (University of Bologna, Italy). Elsevier Applied Science, pp.89, 1988
Zirconia’88 ISBN: 9789401070058

International audience; Dry mixed powders of zirconia partially stabilized with yttria (7-8 wt%) and alumina were plasma sprayed using argon-hydrogen atmospheric plasma jet . The microstructure of plasma sprayed zirconia-alumina composite coatings wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6671c966fbebb486df57077294e5b053
https://hal-unilim.archives-ouvertes.fr/hal-01879079