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X-ray irradiation of soda-lime glasses studied in situ with surface plasmon resonance spectroscopy

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Serrano, A. and Gálvez Alonso, Fernando and Rodríguez de la Fuente, Óscar and García, M. A. (2013) X-ray irradiation of soda-lime glasses studied in situ with surface plasmon resonance spectroscopy. Journal of applied physics, 113 (11). ISSN 0021-8979

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Official URL: http://dx.doi.org/10.1063/1.4794807


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Abstract

We present here a study of hard X-ray irradiation of soda-lime glasses performed in situ and in real time. For this purpose, we have used a Au thin film grown on glass and studied the excitation of its surface plasmon resonance (SPR) while irradiating the sample with X-rays, using a recently developed experimental setup at a synchrotron beamline [Serrano et al., Rev. Sci. Instrum. 83, 083101 (2012)]. The extreme sensitivity of the SPR to the features of the glass substrate allows probing the modifications caused by the X-rays. Irradiation induces color centers in the soda-lime glass, modifying its refractive index. Comparison of the experimental results with simulated data shows that both, the real and the imaginary parts of the refractive index of soda-lime glasses, change upon irradiation in time intervals of a few minutes. After X- ray irradiation, the effects are partially reversible. The defects responsible for these modifications are identified as non-bridging oxygen hole centers, which fade by recombination with electrons after irradiation. The kinetics of the defect formation and fading process are also studied in real time.


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© 2013 American Institute of Physics.
This work has been supported by the Spanish Ministerio de Ciencia e Innovacion (MICINN) through Project Nos. FIS-2008-06249 and MAT2009-14578-C03-02 and by Comunidad de Madrid, Project NANOBIOMAGNET (S2009/MAT-1726). A. Serrano thanks the CSIC for JAEPredoctoral fellowship. We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities and the Spanish Ministerio de Economıa y Competitividad (MECC) and Consejo Superior de Investigaciones Cientıficas (CSIC) for financial support (PE- 2010 6 0E 013) and for provision of synchrotron radiation facilities. We would like to thank the BM25-SpLine staff for the technical support and help far beyond their duties. Finally, the authors acknowledge C. de Julian Fernandez for the access to the spectrophotometer at the Dipartimento di Chimica, University of Firenze. We would like to thank the referee for valuable comments and suggestions.

Uncontrolled Keywords:Alkali silicate-glasses; Electron-spin-resonance; Induced color-centers; Trapped hole-centers; Stability; Absorption; Defects; Oxygen
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:43001
Deposited On:01 Jun 2017 18:39
Last Modified:04 Jul 2018 17:45

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