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Title: High-dose temperature-dependent neutron irradiation effects on the optical transmission and dimensional stability of amorphous fused silica

Abstract

The primary concern for implementing amorphous fused silica (a-SiO2) fiber optic sensors in a nuclear environment is the radiation-induced attenuation (RIA) of the light signal due to the formation of radiation-induced color centers. In addition, Bragg grating sensors drift under irradiation due to radiation-induced compaction of the a-SiO2 structure. This work provides new data regarding RIA and radiation-induced compaction of a-SiO2 samples irradiated to a fast neutron fluence of 2.4 × 1021 n/cm2 at temperatures of 95, 298, and 688 °C. Results show that RIA may be approaching saturation for the range of photon energies evaluated in this paper and that the hydroxyl content has a significant impact on RIA when the irradiation temperature is increased to 688 °C. Furthermore, a model was developed for predicting radiation-induced compaction, and the resulting signal drift for Bragg grating sensors, as a function of neutron fluence and temperature.

Authors:
ORCiD logo [1];  [2];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. The Ohio State Univ., Columbus, OH (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC); USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1607158
Alternate Identifier(s):
OSTI ID: 1573416
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Non-Crystalline Solids
Additional Journal Information:
Journal Volume: 525; Journal Issue: C; Journal ID: ISSN 0022-3093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Irradiation; Fiber optic; Transmission; Compaction; Silica

Citation Formats

Petrie, Christian M., Birri, Anthony, and Blue, Thomas E. High-dose temperature-dependent neutron irradiation effects on the optical transmission and dimensional stability of amorphous fused silica. United States: N. p., 2019. Web. doi:10.1016/j.jnoncrysol.2019.119668.
Petrie, Christian M., Birri, Anthony, & Blue, Thomas E. High-dose temperature-dependent neutron irradiation effects on the optical transmission and dimensional stability of amorphous fused silica. United States. https://doi.org/10.1016/j.jnoncrysol.2019.119668
Petrie, Christian M., Birri, Anthony, and Blue, Thomas E. Sat . "High-dose temperature-dependent neutron irradiation effects on the optical transmission and dimensional stability of amorphous fused silica". United States. https://doi.org/10.1016/j.jnoncrysol.2019.119668. https://www.osti.gov/servlets/purl/1607158.
@article{osti_1607158,
title = {High-dose temperature-dependent neutron irradiation effects on the optical transmission and dimensional stability of amorphous fused silica},
author = {Petrie, Christian M. and Birri, Anthony and Blue, Thomas E.},
abstractNote = {The primary concern for implementing amorphous fused silica (a-SiO2) fiber optic sensors in a nuclear environment is the radiation-induced attenuation (RIA) of the light signal due to the formation of radiation-induced color centers. In addition, Bragg grating sensors drift under irradiation due to radiation-induced compaction of the a-SiO2 structure. This work provides new data regarding RIA and radiation-induced compaction of a-SiO2 samples irradiated to a fast neutron fluence of 2.4 × 1021 n/cm2 at temperatures of 95, 298, and 688 °C. Results show that RIA may be approaching saturation for the range of photon energies evaluated in this paper and that the hydroxyl content has a significant impact on RIA when the irradiation temperature is increased to 688 °C. Furthermore, a model was developed for predicting radiation-induced compaction, and the resulting signal drift for Bragg grating sensors, as a function of neutron fluence and temperature.},
doi = {10.1016/j.jnoncrysol.2019.119668},
journal = {Journal of Non-Crystalline Solids},
number = C,
volume = 525,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:

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Cited by: 17 works
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Figures / Tables:

Table 1 Table 1: Summary of calculated specimen and passive TM temperatures and TM temperatures measured post-irradiation.

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