Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO2

Benoit Brichard; Simonpietro Agnello; Laura Nuccio

doi:10.1109/RADECS.2007.5205481

Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂

Benoit Brichard, Simonpietro Agnello, Laura Nuccio

Research output › peer-review

Abstract

We compare the E', H(I) and Si-ODqII) contents in a low-OH high-purity a-Si02 either in bulk or fibre form s. We found that the H(I) centre appears during irradiation and tend to increase with the dose if the fibre contains hydrogen excess. This behaviour is believed to be one the possible reason to explain the apparent radiation-sensitivity enhancement in the blue-UV spectrum when the fibre is hydrogenated and irradiated at high dose. However for the hydrogen-treated fibres, no experimental repeatability could be evidenced in the measurements of E' and Si-ODC(II) although an acceptable agreement was still found in normal samples. Thi s suggests a possible complex reactional mechanisms in pre sence of gamma radiation when the glass has a hydrogen excess.

Original language	English
Title of host publication	2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007
DOIs	https://doi.org/10.1109/RADECS.2007.5205481
State	Published - 2007
Event	RADECS - 2007: 9th European Conference on Radiation and Its Effects on Components and Systems - Deauville Duration: 10 Sep 2007 → 14 Sep 2007

Publication series

Name	Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS

Conference

Conference	RADECS - 2007
Country/Territory	France
City	Deauville
Period	2007-09-10 → 2007-09-14

ASJC Scopus subject areas

Radiation
Electrical and Electronic Engineering

Access to Document

10.1109/RADECS.2007.5205481License: Unspecified

Cite this

Brichard, B., Agnello, S., & Nuccio, L. (2007). Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂. In 2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007 Article 5205481 (Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS). https://doi.org/10.1109/RADECS.2007.5205481

Brichard, Benoit ; Agnello, Simonpietro ; Nuccio, Laura. / Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂. 2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007. 2007. (Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS).

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abstract = "We compare the E', H(I) and Si-ODqII) contents in a low-OH high-purity a-Si02 either in bulk or fibre form s. We found that the H(I) centre appears during irradiation and tend to increase with the dose if the fibre contains hydrogen excess. This behaviour is believed to be one the possible reason to explain the apparent radiation-sensitivity enhancement in the blue-UV spectrum when the fibre is hydrogenated and irradiated at high dose. However for the hydrogen-treated fibres, no experimental repeatability could be evidenced in the measurements of E' and Si-ODC(II) although an acceptable agreement was still found in normal samples. Thi s suggests a possible complex reactional mechanisms in pre sence of gamma radiation when the glass has a hydrogen excess.",

keywords = "Amma, Fibre, Hydrogen, Point defects, Silica",

author = "Benoit Brichard and Simonpietro Agnello and Laura Nuccio",

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Brichard, B, Agnello, S & Nuccio, L 2007, Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂. in 2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007., 5205481, Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS, RADECS - 2007, Deauville, France, 2007-09-10. https://doi.org/10.1109/RADECS.2007.5205481

Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂. / Brichard, Benoit; Agnello, Simonpietro; Nuccio, Laura.
2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007. 2007. 5205481 (Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS).

Research output › peer-review

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T1 - Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO2

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N2 - We compare the E', H(I) and Si-ODqII) contents in a low-OH high-purity a-Si02 either in bulk or fibre form s. We found that the H(I) centre appears during irradiation and tend to increase with the dose if the fibre contains hydrogen excess. This behaviour is believed to be one the possible reason to explain the apparent radiation-sensitivity enhancement in the blue-UV spectrum when the fibre is hydrogenated and irradiated at high dose. However for the hydrogen-treated fibres, no experimental repeatability could be evidenced in the measurements of E' and Si-ODC(II) although an acceptable agreement was still found in normal samples. Thi s suggests a possible complex reactional mechanisms in pre sence of gamma radiation when the glass has a hydrogen excess.

AB - We compare the E', H(I) and Si-ODqII) contents in a low-OH high-purity a-Si02 either in bulk or fibre form s. We found that the H(I) centre appears during irradiation and tend to increase with the dose if the fibre contains hydrogen excess. This behaviour is believed to be one the possible reason to explain the apparent radiation-sensitivity enhancement in the blue-UV spectrum when the fibre is hydrogenated and irradiated at high dose. However for the hydrogen-treated fibres, no experimental repeatability could be evidenced in the measurements of E' and Si-ODC(II) although an acceptable agreement was still found in normal samples. Thi s suggests a possible complex reactional mechanisms in pre sence of gamma radiation when the glass has a hydrogen excess.

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Brichard B, Agnello S, Nuccio L. Comparison between point defect generation by γ-rays in bulk and fibre samples of high purity amorphous SiO₂. In 2007 9th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2007. 2007. 5205481. (Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS). doi: 10.1109/RADECS.2007.5205481