Near infrared radio-luminescence of O2 loaded radiation hardened silica optical fibers: A candidate dosimeter for harsh environments

Franco Mario Gelardi, Simonpietro Agnello, Diego Di Francesca, Marcandella, Girard, Di Francesca, Paillet, Boukenter, Ouerdane

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Abstract

We report on an experimental investigation of the infrared Radio-Luminescence (iRL) emission of interstitial O2 molecules loaded in radiation hardened pure-silica-core and fluorine-doped silica-based optical fibers (OFs). The O2 loading treatment successfully dissolved high concentrations of oxygen molecules into the silica matrix. A sharp luminescence at 1272 nm was detected when 2.5 cm of the treated OFs were irradiated with 10 keV X-rays. This emission originates from the radiative decay of the first excited singlet state of the embedded O2 molecules. The dose, dose-rate, and temperature dependencies of the infrared emission are studied through in situ optical measurements. The results show that the iRL is quite stable in doses of up to 1 MGy(SiO2) and is linearly dependent on the dose-rate up to the maximum investigated doserate of 200 kGy(SiO2)/h. The temperature dependency of the iRL shows a decrease in efficiency above 200 C, which is attributed to the non-radiative decay of the excited O2 molecules. The results obtained and the long-term stability of the O2-loading treatment (no out-gassing effect) strongly suggest the applicability of these components to real-time remote dosimetry in environments characterized by high radiation doses and dose-rates.
Lingua originaleEnglish
pagine (da-a)-
Numero di pagine4
RivistaApplied Physics Letters
Volume105
Stato di pubblicazionePublished - 2014

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dosimeters
optical fibers
luminescence
silicon dioxide
dosage
radiation
molecules
decay
optical measurement
fluorine
interstitials
temperature
oxygen
matrices
excitation
x rays

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cita questo

@article{cf641428e5974490b1f4f27e652697d4,
title = "Near infrared radio-luminescence of O2 loaded radiation hardened silica optical fibers: A candidate dosimeter for harsh environments",
abstract = "We report on an experimental investigation of the infrared Radio-Luminescence (iRL) emission of interstitial O2 molecules loaded in radiation hardened pure-silica-core and fluorine-doped silica-based optical fibers (OFs). The O2 loading treatment successfully dissolved high concentrations of oxygen molecules into the silica matrix. A sharp luminescence at 1272 nm was detected when 2.5 cm of the treated OFs were irradiated with 10 keV X-rays. This emission originates from the radiative decay of the first excited singlet state of the embedded O2 molecules. The dose, dose-rate, and temperature dependencies of the infrared emission are studied through in situ optical measurements. The results show that the iRL is quite stable in doses of up to 1 MGy(SiO2) and is linearly dependent on the dose-rate up to the maximum investigated doserate of 200 kGy(SiO2)/h. The temperature dependency of the iRL shows a decrease in efficiency above 200 C, which is attributed to the non-radiative decay of the excited O2 molecules. The results obtained and the long-term stability of the O2-loading treatment (no out-gassing effect) strongly suggest the applicability of these components to real-time remote dosimetry in environments characterized by high radiation doses and dose-rates.",
author = "Gelardi, {Franco Mario} and Simonpietro Agnello and {Di Francesca}, Diego and Marcandella and Girard and {Di Francesca} and Paillet and Boukenter and Ouerdane",
year = "2014",
language = "English",
volume = "105",
pages = "--",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",

}

TY - JOUR

T1 - Near infrared radio-luminescence of O2 loaded radiation hardened silica optical fibers: A candidate dosimeter for harsh environments

AU - Gelardi, Franco Mario

AU - Agnello, Simonpietro

AU - Di Francesca, Diego

AU - Marcandella, null

AU - Girard, null

AU - Di Francesca, null

AU - Paillet, null

AU - Boukenter, null

AU - Ouerdane, null

PY - 2014

Y1 - 2014

N2 - We report on an experimental investigation of the infrared Radio-Luminescence (iRL) emission of interstitial O2 molecules loaded in radiation hardened pure-silica-core and fluorine-doped silica-based optical fibers (OFs). The O2 loading treatment successfully dissolved high concentrations of oxygen molecules into the silica matrix. A sharp luminescence at 1272 nm was detected when 2.5 cm of the treated OFs were irradiated with 10 keV X-rays. This emission originates from the radiative decay of the first excited singlet state of the embedded O2 molecules. The dose, dose-rate, and temperature dependencies of the infrared emission are studied through in situ optical measurements. The results show that the iRL is quite stable in doses of up to 1 MGy(SiO2) and is linearly dependent on the dose-rate up to the maximum investigated doserate of 200 kGy(SiO2)/h. The temperature dependency of the iRL shows a decrease in efficiency above 200 C, which is attributed to the non-radiative decay of the excited O2 molecules. The results obtained and the long-term stability of the O2-loading treatment (no out-gassing effect) strongly suggest the applicability of these components to real-time remote dosimetry in environments characterized by high radiation doses and dose-rates.

AB - We report on an experimental investigation of the infrared Radio-Luminescence (iRL) emission of interstitial O2 molecules loaded in radiation hardened pure-silica-core and fluorine-doped silica-based optical fibers (OFs). The O2 loading treatment successfully dissolved high concentrations of oxygen molecules into the silica matrix. A sharp luminescence at 1272 nm was detected when 2.5 cm of the treated OFs were irradiated with 10 keV X-rays. This emission originates from the radiative decay of the first excited singlet state of the embedded O2 molecules. The dose, dose-rate, and temperature dependencies of the infrared emission are studied through in situ optical measurements. The results show that the iRL is quite stable in doses of up to 1 MGy(SiO2) and is linearly dependent on the dose-rate up to the maximum investigated doserate of 200 kGy(SiO2)/h. The temperature dependency of the iRL shows a decrease in efficiency above 200 C, which is attributed to the non-radiative decay of the excited O2 molecules. The results obtained and the long-term stability of the O2-loading treatment (no out-gassing effect) strongly suggest the applicability of these components to real-time remote dosimetry in environments characterized by high radiation doses and dose-rates.

UR - http://hdl.handle.net/10447/103550

M3 - Article

VL - 105

SP - -

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

ER -