Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays

Mel O'Leary; Daria  Boscolo; Nicole Breslin; Jeremy Brown; Igor P.  Dolbnya; Christopher Emerson; Catarina Figueira; Oliver J. L.  Fox; D R  Crimes; Vladimir Ivosev; Annette K.  Kleppe; Aaron McCulloch; Ian  Pape; Chris  Polin; Nathan  Wardlow; Frederick Currell

doi:10.1038/s41598-018-21813-z

Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays

Mel O'Leary, Daria Boscolo, Nicole Breslin, Jeremy Brown, Igor P. Dolbnya, Christopher Emerson, Catarina Figueira, Oliver J. L. Fox, D R Crimes, Vladimir Ivosev, Annette K. Kleppe, Aaron McCulloch, Ian Pape, Chris Polin, Nathan Wardlow, Frederick Currell

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

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Abstract

Absolute measurements of the radiolytic yield of Fe3+ in a ferrous sulphate dosimeter formulation (6 mM Fe2+), with a 20 keV x-ray monoenergetic beam, are reported. Dose-rate suppression of the radiolytic yield was observed at dose rates lower than and different in nature to those previously reported with x-rays. We present evidence that this effect is most likely to be due to recombination of free radicals radiolytically produced from water. The method used to make these measurements is also new and it provides radiolytic yields which are directly traceable to the SI standards system. The data presented provides new and exacting tests of radiation chemistry codes.

Original language	English
Article number	4735
Pages (from-to)	1-9
Journal	Scientific Reports
Volume	8
DOIs	https://doi.org/10.1038/s41598-018-21813-z
Publication status	Published - 16 Mar 2018

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Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays
Copyright 2018 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 1.4 MBLicence: CC BY

Dataset: Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays
O'Leary, M. (Creator), Breslin, N. (Contributor), Brown, J. (Contributor), Emerson, C. (Contributor), Figueira, C. (Contributor), Grimes, D. (Contributor), Ivosev, V. (Contributor), McCulloch, A. (Contributor), Polin, C. (Contributor), Wardlow, N. (Contributor) & Currell, F. (Creator), Queen's University Belfast, 14 Mar 2018
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Creation and enhancement of a quantized hybrid computational model of cell cycle progression including DNA damage and repair mechanisms
Author: Emerson, C., Dec 2020
Supervisor: Coulter, J. (Supervisor) & Green, D. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Real-time observation of particle interactions in matter using laser-driven accelerators
Author: Breslin, N., Dec 2021
Supervisor: Dromey, B. (Supervisor) & Yeung, M. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Cite this

O'Leary, M., Boscolo, D., Breslin, N., Brown, J., Dolbnya, I. P., Emerson, C., Figueira, C., Fox, O. J. L., Crimes, D. R., Ivosev, V., Kleppe, A. K., McCulloch, A., Pape, I., Polin, C., Wardlow, N., & Currell, F. (2018). Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays. Scientific Reports, 8, 1-9. [4735]. https://doi.org/10.1038/s41598-018-21813-z

O'Leary, Mel ; Boscolo, Daria ; Breslin, Nicole ; Brown, Jeremy ; Dolbnya, Igor P. ; Emerson, Christopher ; Figueira, Catarina ; Fox, Oliver J. L. ; Crimes, D R ; Ivosev, Vladimir ; Kleppe, Annette K. ; McCulloch, Aaron ; Pape, Ian ; Polin, Chris ; Wardlow, Nathan ; Currell, Frederick. / Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays. In: Scientific Reports. 2018 ; Vol. 8. pp. 1-9.

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title = "Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays",

abstract = "Absolute measurements of the radiolytic yield of Fe3+ in a ferrous sulphate dosimeter formulation (6 mM Fe2+), with a 20 keV x-ray monoenergetic beam, are reported. Dose-rate suppression of the radiolytic yield was observed at dose rates lower than and different in nature to those previously reported with x-rays. We present evidence that this effect is most likely to be due to recombination of free radicals radiolytically produced from water. The method used to make these measurements is also new and it provides radiolytic yields which are directly traceable to the SI standards system. The data presented provides new and exacting tests of radiation chemistry codes.",

author = "Mel O'Leary and Daria Boscolo and Nicole Breslin and Jeremy Brown and Dolbnya, {Igor P.} and Christopher Emerson and Catarina Figueira and Fox, {Oliver J. L.} and Crimes, {D R} and Vladimir Ivosev and Kleppe, {Annette K.} and Aaron McCulloch and Ian Pape and Chris Polin and Nathan Wardlow and Frederick Currell",

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month = mar,

day = "16",

doi = "10.1038/s41598-018-21813-z",

language = "English",

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journal = "Nature Scientific Reports",

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O'Leary, M, Boscolo, D, Breslin, N, Brown, J, Dolbnya, IP, Emerson, C, Figueira, C, Fox, OJL, Crimes, DR, Ivosev, V, Kleppe, AK, McCulloch, A, Pape, I, Polin, C, Wardlow, N & Currell, F 2018, 'Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays', Scientific Reports, vol. 8, 4735, pp. 1-9. https://doi.org/10.1038/s41598-018-21813-z

Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays. / O'Leary, Mel; Boscolo, Daria ; Breslin, Nicole; Brown, Jeremy; Dolbnya, Igor P.; Emerson, Christopher; Figueira, Catarina; Fox, Oliver J. L. ; Crimes, D R ; Ivosev, Vladimir; Kleppe, Annette K. ; McCulloch, Aaron; Pape, Ian ; Polin, Chris ; Wardlow, Nathan ; Currell, Frederick.

In: Scientific Reports, Vol. 8, 4735, 16.03.2018, p. 1-9.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays

AU - O'Leary, Mel

AU - Boscolo, Daria

AU - Breslin, Nicole

AU - Brown, Jeremy

AU - Dolbnya, Igor P.

AU - Emerson, Christopher

AU - Figueira, Catarina

AU - Fox, Oliver J. L.

AU - Crimes, D R

AU - Ivosev, Vladimir

AU - Kleppe, Annette K.

AU - McCulloch, Aaron

AU - Pape, Ian

AU - Polin, Chris

AU - Wardlow, Nathan

AU - Currell, Frederick

PY - 2018/3/16

Y1 - 2018/3/16

N2 - Absolute measurements of the radiolytic yield of Fe3+ in a ferrous sulphate dosimeter formulation (6 mM Fe2+), with a 20 keV x-ray monoenergetic beam, are reported. Dose-rate suppression of the radiolytic yield was observed at dose rates lower than and different in nature to those previously reported with x-rays. We present evidence that this effect is most likely to be due to recombination of free radicals radiolytically produced from water. The method used to make these measurements is also new and it provides radiolytic yields which are directly traceable to the SI standards system. The data presented provides new and exacting tests of radiation chemistry codes.

AB - Absolute measurements of the radiolytic yield of Fe3+ in a ferrous sulphate dosimeter formulation (6 mM Fe2+), with a 20 keV x-ray monoenergetic beam, are reported. Dose-rate suppression of the radiolytic yield was observed at dose rates lower than and different in nature to those previously reported with x-rays. We present evidence that this effect is most likely to be due to recombination of free radicals radiolytically produced from water. The method used to make these measurements is also new and it provides radiolytic yields which are directly traceable to the SI standards system. The data presented provides new and exacting tests of radiation chemistry codes.

U2 - 10.1038/s41598-018-21813-z

DO - 10.1038/s41598-018-21813-z

M3 - Article

VL - 8

SP - 1

EP - 9

JO - Nature Scientific Reports

JF - Nature Scientific Reports

SN - 2045-2322

M1 - 4735

ER -

Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays

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Dataset: Observation of dose-rate dependence in a Fricke dosimeter irradiated at low dose rates with monoenergetic X-rays

Student theses

Creation and enhancement of a quantized hybrid computational model of cell cycle progression including DNA damage and repair mechanisms

Real-time observation of particle interactions in matter using laser-driven accelerators

Cite this