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1.
O$_{2}$ Loaded Germanosilicate Optical Fibers: Experimental In Situ Investigation and Ab Initio Simulation Study of GLPC Evolution under Irradiation / Reghioua, Imene (St. Etienne U.) ; Giacomazzi, Luigi (Nova Gorica U. ; CNR, Italy) ; Alessi, Antonino (Ec. Polytech., Palaiseau, CMLS) ; Winkler, Blaz (Nova Gorica U.) ; Martin-Samos, Layla (CNR, Italy) ; Girard, Sylvain (St. Etienne U.) ; Di Francesca, Diego (St. Etienne U. ; CERN) ; Fanetti, Mattia (Nova Gorica U.) ; Richard, Nicolas (CEA DAM) ; Paillet, Philippe (CEA DAM) et al.
In this work we present a combined experimental and ab initio simulation investigation concerning the Germanium Lone Pair Center (GLPC), its interaction with molecular oxygen (O$_{2}$), and evolution under irradiation. First, O$_{2}$ loading has been applied here to Ge-doped optical fibers to reduce the concentration of GLPC point defects. [...]
2022 - 13 p. - Published in : Appl. Sciences 12 (2022) 3916 Fulltext: PDF;
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2.
Combined Temperature Radiation Effects and Influence of Drawing Conditions on Phosphorous‐Doped Optical Fibers / Di Francesca, Diego (CERN) ; Girard, Sylvain (Lyon U. ; Lab. Hubert Curien, St. Etienne) ; Agnello, Simonpietro (Palermo U.) ; Alessi, Antonino (Lyon U. ; Lab. Hubert Curien, St. Etienne) ; Marcandella, Claude (CEA DAM) ; Paillet, Philippe (CEA DAM) ; Ouerdane, Youcef (Lyon U. ; Lab. Hubert Curien, St. Etienne) ; Kadi, Yacine (CERN) ; Brugger, Markus (CERN) ; Boukenter, Aziz (Lyon U. ; Lab. Hubert Curien, St. Etienne)
This work focuses on the effects of high dose ionizing radiation, up to 10 MGy(SiO$_2$), on P-doped multimode optical fibers (OF) at different irradiation temperatures. The investigation is based on two complementary experimental techniques: radiation-induced attenuation (RIA) measurements and electron paramagnetic resonance (EPR). [...]
2018 - Published in : Phys. Status Solidi A 216 (2018) 1800553
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3.
Study of silica-based intrinsically emitting nanoparticles produced by an excimer laser / Reghioua, Imène (Lyon U. ; St. Etienne U. ; Lab. Hubert Curien, St. Etienne) ; Fanetti, Mattia (Nova Gorica U.) ; Girard, Sylvain (Lyon U. ; St. Etienne U. ; Lab. Hubert Curien, St. Etienne) ; Di Francesca, Diego (Lyon U. ; CERN) ; Agnello, Simonpietro (Palermo U.) ; Martin-Samos, Layla (Nova Gorica U.) ; Cannas, Marco (Palermo U.) ; Valant, Matjaz (Nova Gorica U.) ; Raine, Melanie (CEA DAM) ; Gaillardin, Marc (CEA DAM) et al.
We report an experimental study demonstrating the feasibility to produce both pure and Ge-doped silica nanoparticles (size ranging from tens up to hundreds of nanometers) using nanosecond pulsed KrF laser ablation of bulk glass. In particular, pure silica nanoparticles were produced using a laser pulse energy of 400 mJ on pure silica, whereas Ge-doped nanoparticles were obtained using 33 and 165 mJ per pulse on germanosilicate glass. [...]
2019 - 11 p. - Published in : Beilstein J. Nanotechnol. 10 (2019) 211-221 Fulltext from publisher: PDF;
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4.
Transient and Steady-State Radiation Response of Phosphosilicate Optical Fibers: Influence of H2 Loading / Girard, S (St. Etienne U.) ; Michele, V De (St. Etienne U.) ; Alessi, A (St. Etienne U.) ; Marcandella, C (CEA DAM) ; Francesca, D Di (CERN) ; Paillet, P (CEA DAM) ; Morana, A (St. Etienne U.) ; Vidalot, J (St. Etienne U.) ; Campanella, Cosimo (St. Etienne U.) ; Agnello, S (Palermo U.) et al.
The radiation response of a phosphorus-doped multimode optical fiber is investigated under both transient (pulsed X-rays) and steady-state ( $\gamma $ - and X-rays) irradiations. The influence of a H2preloading on the fiber radiation-induced attenuation (RIA) in the 300–2000-nm wavelength range has been characterized [...]
2019 - 7 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2019) 289-295
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5.
Overview of radiation induced point defects in silica-based optical fibers / Girard, Sylvain (Jean Monnet U.) ; Alessi, Antonino (Jean Monnet U.) ; Richard, Nicolas (CEA DAM) ; Martin-Samos, Layla (DEMOCRITOS, Grignano) ; De Michele, Vincenzo (Jean Monnet U. ; Palermo U.) ; Giacomazzi, Luigi (Nova Gorica U.) ; Agnello, Simonpietro (Palermo U.) ; Francesca, Diego Di (CERN) ; Morana, Adriana (Jean Monnet U.) ; Winkler, Blaž (Nova Gorica U.) et al.
Silica-based optical fibers, fiber-based devices and optical fiber sensors are today integrated in a variety of harsh environments associated with radiation constraints. Under irradiation, the macroscopic properties of the optical fibers are modified through three main basic mechanisms: the radiation induced attenuation, the radiation induced emission and the radiation induced refractive index change. [...]
2019 - Published in : Rev. Phys. 4 (2019) 100032 Fulltext: PDF;
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6.
Coupled irradiation-temperature effects on induced point defects in germanosilicate optical fibers / Alessi, A (Lab. Hubert Curien, St. Etienne) ; Agnello, S (Palermo U.) ; Girard, S (Lab. Hubert Curien, St. Etienne) ; Di Francesca, D (CERN ; Lab. Hubert Curien, St. Etienne) ; Reghioua, I (Lab. Hubert Curien, St. Etienne) ; Marcandella, C (CEA DAM) ; Paillet, P (CEA DAM) ; Richard, N (CEA DAM) ; Martin-Samos, L (Nova Gorica U.) ; Cannas, M (Palermo U.) et al.
We investigated the combined effects of temperature and X-rays exposures on the nature of point defects generated in Ge-doped multimode optical fibers. Electron paramagnetic resonance (EPR) results on samples X-ray irradiated at 5 kGy(SiO2), employing different temperatures and dose rates, are reported and discussed. [...]
2017 - 12 p. - Published in : J. Materials Sci. 52 (2017) 10697-10708
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似た著者名：
1 Agnello, Simone Dell'
4 Agnello, Simonpietro
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