@article {Richard2014,
	title = {Coupled Theoretical and Experimental Studies for the Radiation Hardening of Silica-Based Optical Fibers},
	journal = {IEEE transactions on nuclear science},
	volume = {61},
	year = {2014},
	pages = {1819–1825},
	publisher = {Professional Technical Group on Nuclear Science,},
	address = {New York, N.Y.},
	abstract = {We applied theoretical and experimental spectroscopy tools to ad hoc silica-based \"canonical\" samples to characterize the influence of several dopants and of some drawing process parameters on their radiation sensitivities. We present in this paper, the recent advances and results occurring from our coupled approach. On the experimental side, we studied the doping influence on the response of optical fibers and showed that changing the drawing parameters has a negligible influence on the fiber response in the case of specialty fibers. We focus mainly on the SiE\' defect that is observed through Electron Paramagnetic Resonance (EPR) measurements in all canonical samples. On the theoretical side, we exhibit the improvements obtained in the calculations of electronic and optical properties of defects by using Many Body Perturbation Theory through the use of the GW approximation and the resolution of the Bethe-Salpeter equation instead of the Density Functional Theory (Local Density Approximation). To continue to strengthen the link between experiment and simulation, we have performed first-principles calculations of EPR parameters of some silica-based defects. The first results allowing for an attribution of EPR E\' signals to structural models are presented. In particular, we confirm that the E-gamma\' center is originated by an unpaired electron in a sp(3) state at a three-fold coordinated silicon atom.},
	keywords = {Ab initio calculations, defects, density functional theory, optical fibers, radiation effects, silica, theoretical spectroscopy},
	issn = {0018-9499},
	doi = {10.1109/TNS.2014.2321480},
	author = {Richard, N. and Girard, S. and Giacomazzi, L. and Martin-Samos, L. and Di Francesca, D. and Marcandella, C. and Alessi, A. and Paillet, P. and Agnello, S. and Boukenter, A. and Ouerdane, Y. and Cannas, M. and Boscaino, R.}
}
@article {Leon2014,
	title = {Neutron Irradiation Effects on the Structural Properties of KU1, KS-4V and I301 Silica Glasses},
	journal = {IEEE transactions on nuclear science},
	volume = {61},
	year = {2014},
	pages = {1522–1530},
	publisher = {Professional Technical Group on Nuclear Science,},
	address = {New York, N.Y.},
	abstract = {In this paper, we have studied the effects of high neutron fluences (10(21) and 10(22) n/m(2)) and high gamma-ray doses (23.8 MGy) on the structural properties of three different types of silica glasses: two high purity silica with different OH content, KU1 (800 ppm) and KS-4V (0.2 ppm); and a commercial silica Infrasil 301 (< 8 ppm). The experimental results obtained by Raman and Fourier transform infrared (FTIR) spectroscopies have been compared with ab-initio simulations and show that, while the global changes on the structure of the gamma-irradiated silica are not significant, the structural changes due to neutron irradiation result in an increase of the number of strained bonds responsible for the formation of new defects that alter the optical properties of the glasses.},
	keywords = {Gamma irradiation, irradiation effects, neutron irradiation, point defects, silica, structural properties},
	issn = {0018-9499},
	doi = {10.1109/TNS.2013.2294033},
	author = {Leon, M. and Giacomazzi, L. and Girard, S. and Richard, N. and Martin, P. and Martin-Samos, L. and Ibarra, A. and Boukenter, A. and Ouerdane, Y.}
}
