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

Petrie, Christian M.; Birri, Anthony; Blue, Thomas E.

doi:10.1016/j.jnoncrysol.2019.119668

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:

^[1]; Birri, Anthony ^[2]; Blue, Thomas E. ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
The Ohio State Univ., Columbus, OH (United States)

Publication Date:: Sat Oct 19 00:00:00 EDT 2019

Research Org.:: Oak Ridge National Laboratory (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.

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                    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

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                    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.

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@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         = {Sat Oct 19 00:00:00 EDT 2019},

  month        = {Sat Oct 19 00:00:00 EDT 2019}

}

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Cited by: 21 works

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Figures / Tables:

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

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