PMMA optical fibres for real-time gamma dosimetry

S. O' Keefe; Alberto Fernandez Fernandez; C. Fitzpatrick; Benoît Brichard; E. Lewis

PMMA optical fibres for real-time gamma dosimetry

S. O' Keefe, Alberto Fernandez Fernandez, C. Fitzpatrick, Benoît Brichard, E. Lewis

Research output › peer-review

Abstract

The ability to monitor gamma irradiation in real-time has been demonstrated. The results show a linear response of the radiation-induced attenuation at various wavelengths, agreeable with the Beer-Lambert Law. Due to the intrinsic nature of the PMMA plastic optical fibre, it was possible to monitor the light between 500nm and 680nm. The sensitivity of the fibre to gamma irradiation is shown to be dependant on wavelength, with the sensitivity increasing with decreasing wavelength. With the current system set-up, there is a compromise between sensitivity and dose range, as at wavelengths that have high sensitivities the signal was found to attenuate completely at relatively low doses. At wavelengths between 530nm and 600nm high sensitivity was observed for doses up to 10 kGy. At wavelengths between 600nm and 680nm, the dose range increase to 50 kGy, however the sensitivity is lower.

Original language	English
Title of host publication	18th International Optical Fiber Sensors Conference Technical Digest
Place of Publication	Washington, United States
Pages	1-4
State	Published - 23 Oct 2007
Event	18th International Optical Fiber Sensors Conference - OSA, Cancun Duration: 23 Oct 2006 → 27 Oct 2006

Conference

Conference	18th International Optical Fiber Sensors Conference
Country/Territory	Mexico
City	Cancun
Period	2006-10-23 → 2006-10-27

Cite this

@inproceedings{ad8d38ab541a49ccbfa8e9fa8ad16696,

title = "PMMA optical fibres for real-time gamma dosimetry",

abstract = "The ability to monitor gamma irradiation in real-time has been demonstrated. The results show a linear response of the radiation-induced attenuation at various wavelengths, agreeable with the Beer-Lambert Law. Due to the intrinsic nature of the PMMA plastic optical fibre, it was possible to monitor the light between 500nm and 680nm. The sensitivity of the fibre to gamma irradiation is shown to be dependant on wavelength, with the sensitivity increasing with decreasing wavelength. With the current system set-up, there is a compromise between sensitivity and dose range, as at wavelengths that have high sensitivities the signal was found to attenuate completely at relatively low doses. At wavelengths between 530nm and 600nm high sensitivity was observed for doses up to 10 kGy. At wavelengths between 600nm and 680nm, the dose range increase to 50 kGy, however the sensitivity is lower.",

keywords = "gamma radiation PMMA",

author = "{O' Keefe}, S. and {Fernandez Fernandez}, Alberto and C. Fitzpatrick and Beno{\^i}t Brichard and E. Lewis",

note = "Score = 1; 18th International Optical Fiber Sensors Conference ; Conference date: 23-10-2006 Through 27-10-2006",

year = "2007",

month = oct,

day = "23",

language = "English",

isbn = "978-1-55752-817-9",

pages = "1--4",

booktitle = "18th International Optical Fiber Sensors Conference Technical Digest",

}

TY - GEN

T1 - PMMA optical fibres for real-time gamma dosimetry

AU - O' Keefe, S.

AU - Fernandez Fernandez, Alberto

AU - Fitzpatrick, C.

AU - Brichard, Benoît

AU - Lewis, E.

N1 - Score = 1

PY - 2007/10/23

Y1 - 2007/10/23

N2 - The ability to monitor gamma irradiation in real-time has been demonstrated. The results show a linear response of the radiation-induced attenuation at various wavelengths, agreeable with the Beer-Lambert Law. Due to the intrinsic nature of the PMMA plastic optical fibre, it was possible to monitor the light between 500nm and 680nm. The sensitivity of the fibre to gamma irradiation is shown to be dependant on wavelength, with the sensitivity increasing with decreasing wavelength. With the current system set-up, there is a compromise between sensitivity and dose range, as at wavelengths that have high sensitivities the signal was found to attenuate completely at relatively low doses. At wavelengths between 530nm and 600nm high sensitivity was observed for doses up to 10 kGy. At wavelengths between 600nm and 680nm, the dose range increase to 50 kGy, however the sensitivity is lower.

AB - The ability to monitor gamma irradiation in real-time has been demonstrated. The results show a linear response of the radiation-induced attenuation at various wavelengths, agreeable with the Beer-Lambert Law. Due to the intrinsic nature of the PMMA plastic optical fibre, it was possible to monitor the light between 500nm and 680nm. The sensitivity of the fibre to gamma irradiation is shown to be dependant on wavelength, with the sensitivity increasing with decreasing wavelength. With the current system set-up, there is a compromise between sensitivity and dose range, as at wavelengths that have high sensitivities the signal was found to attenuate completely at relatively low doses. At wavelengths between 530nm and 600nm high sensitivity was observed for doses up to 10 kGy. At wavelengths between 600nm and 680nm, the dose range increase to 50 kGy, however the sensitivity is lower.

KW - gamma radiation PMMA

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_34279

UR - http://knowledgecentre.sckcen.be/so2/bibref/3783

M3 - In-proceedings paper

SN - 978-1-55752-817-9

SP - 1

EP - 4

BT - 18th International Optical Fiber Sensors Conference Technical Digest

CY - Washington, United States

T2 - 18th International Optical Fiber Sensors Conference

Y2 - 23 October 2006 through 27 October 2006

ER -