Temperature dependence of the dose response for a solid-state radiochromic dosimeter during irradiation and storage.
Saved in:
| Title: | Temperature dependence of the dose response for a solid-state radiochromic dosimeter during irradiation and storage. |
|---|---|
| Authors: | Skyt, Peter S.1, Balling, Peter2, Petersen, Jo\rgen B. B.1, Yates, Esben S.1, Muren, Ludvig P.1 |
| Source: | Medical Physics. May2011, Vol. 38 Issue 5, p2806-2811. 6p. |
| Subjects: | Radiation dosimetry, Solid state chemistry, Temperature effect, Chemical reactions, Spectrophotometers, Arrhenius equation, Heat storage, Opacity (Optics) |
| Abstract: | Purpose: The dose response of radiochromic dosimeters is based on radiation-induced chemical reactions and is thus likely to be thermally influenced. In this study we have therefore investigated the temperature dependence of the dose response for such dosimeters, regarding both irradiation and storage conditions. Methods: Dosimeter samples in cuvettes were irradiated to 5 Gy. The temperature for the different cuvettes during irradiation and post-irradiation storage was varied in the range of 3-30 °C in order to quantify the temperature dependence of the dosimeter response. The optical properties of the dosimeter samples were measured using a spectrophotometer before irradiation as well as at several times after irradiation to quantify the temporal variation of dose response (expressed as the optical density change induced by irradiation) as a function of storage temperature. Results: The measurements show considerable temperature dependencies of dose response both during irradiation and storage. Fit to an Arrhenius equation revealed an activation energy of 1.4 ± 0.2 eV for the variation in irradiation temperature, indicating a contribution from a thermally activated process. Variation in dose response at different storage temperatures showed an exponential increase with time followed by a decrease in optical density. Exponential Arrhenius fits to rate constants gave activation energies of 1.7 ± 0.2 eV for the increase in dose response and 2.3 ± 0.5 eV for the subsequent decrease, in this case dominated by thermally activated processes. Conclusions: Due to the exponential dependencies, stabilization of the dosimeter during irradiation at low temperatures (e.g., 5 °C) is preferable in clinical use to optimize the accuracy of the dose response. In addition, a low storage temperature is recommended in order to minimize the post-irradiation temporal change in dose response and thereby increase the post-irradiation stability of the dosimeter. The measurements in this study show that if the observed temperature and temporal dependencies are not considered, this could potentially deteriorate the accuracy of the dosimeter. [ABSTRACT FROM AUTHOR] |
| Copyright of Medical Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 60594666 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Temperature dependence of the dose response for a solid-state radiochromic dosimeter during irradiation and storage. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Skyt%2C+Peter+S%2E%22">Skyt, Peter S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Balling%2C+Peter%22">Balling, Peter</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Petersen%2C+Jo\rgen+B%2E+B%2E%22">Petersen, Jo\rgen B. B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yates%2C+Esben+S%2E%22">Yates, Esben S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Muren%2C+Ludvig+P%2E%22">Muren, Ludvig P.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Medical+Physics%22">Medical Physics</searchLink>. May2011, Vol. 38 Issue 5, p2806-2811. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Radiation+dosimetry%22">Radiation dosimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+state+chemistry%22">Solid state chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrophotometers%22">Spectrophotometers</searchLink><br /><searchLink fieldCode="DE" term="%22Arrhenius+equation%22">Arrhenius equation</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+storage%22">Heat storage</searchLink><br /><searchLink fieldCode="DE" term="%22Opacity+%28Optics%29%22">Opacity (Optics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Purpose: The dose response of radiochromic dosimeters is based on radiation-induced chemical reactions and is thus likely to be thermally influenced. In this study we have therefore investigated the temperature dependence of the dose response for such dosimeters, regarding both irradiation and storage conditions. Methods: Dosimeter samples in cuvettes were irradiated to 5 Gy. The temperature for the different cuvettes during irradiation and post-irradiation storage was varied in the range of 3-30 °C in order to quantify the temperature dependence of the dosimeter response. The optical properties of the dosimeter samples were measured using a spectrophotometer before irradiation as well as at several times after irradiation to quantify the temporal variation of dose response (expressed as the optical density change induced by irradiation) as a function of storage temperature. Results: The measurements show considerable temperature dependencies of dose response both during irradiation and storage. Fit to an Arrhenius equation revealed an activation energy of 1.4 ± 0.2 eV for the variation in irradiation temperature, indicating a contribution from a thermally activated process. Variation in dose response at different storage temperatures showed an exponential increase with time followed by a decrease in optical density. Exponential Arrhenius fits to rate constants gave activation energies of 1.7 ± 0.2 eV for the increase in dose response and 2.3 ± 0.5 eV for the subsequent decrease, in this case dominated by thermally activated processes. Conclusions: Due to the exponential dependencies, stabilization of the dosimeter during irradiation at low temperatures (e.g., 5 °C) is preferable in clinical use to optimize the accuracy of the dose response. In addition, a low storage temperature is recommended in order to minimize the post-irradiation temporal change in dose response and thereby increase the post-irradiation stability of the dosimeter. The measurements in this study show that if the observed temperature and temporal dependencies are not considered, this could potentially deteriorate the accuracy of the dosimeter. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Medical Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=60594666 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1118/1.3582702 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 2806 Subjects: – SubjectFull: Radiation dosimetry Type: general – SubjectFull: Solid state chemistry Type: general – SubjectFull: Temperature effect Type: general – SubjectFull: Chemical reactions Type: general – SubjectFull: Spectrophotometers Type: general – SubjectFull: Arrhenius equation Type: general – SubjectFull: Heat storage Type: general – SubjectFull: Opacity (Optics) Type: general Titles: – TitleFull: Temperature dependence of the dose response for a solid-state radiochromic dosimeter during irradiation and storage. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Skyt, Peter S. – PersonEntity: Name: NameFull: Balling, Peter – PersonEntity: Name: NameFull: Petersen, Jo\rgen B. B. – PersonEntity: Name: NameFull: Yates, Esben S. – PersonEntity: Name: NameFull: Muren, Ludvig P. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 00942405 Numbering: – Type: volume Value: 38 – Type: issue Value: 5 Titles: – TitleFull: Medical Physics Type: main |
| ResultId | 1 |
