Dose rate dependence for different dosimeters and detectors: TLD, OSL, EBT films, and diamond detectors.
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| Title: | Dose rate dependence for different dosimeters and detectors: TLD, OSL, EBT films, and diamond detectors. |
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| Authors: | Karsch, L.1, Beyreuther, E.2, Burris-Mog, T.2, Kraft, S.2, Richter, C.2, Zeil, K.2, Pawelke, J.3 |
| Source: | Medical Physics. May2012, Vol. 39 Issue 5, p2447-2455. 9p. |
| Subjects: | Radiation dosimetry, Metal detectors, Thermoluminescence dosimetry, Evidence-based psychotherapy, Iontophoresis, Diamonds, Medical lasers, Radiotherapy |
| Abstract: | Purpose: The use of laser accelerators in radiation therapy can perhaps increase the low number of proton and ion therapy facilities in some years due to the low investment costs and small size. The laser-based acceleration technology leads to a very high peak dose rate of about 1011 Gy/s. A first dosimetric task is the evaluation of dose rate dependence of clinical dosimeters and other detectors. Methods: The measurements were done at ELBE, a superconductive linear electron accelerator which generates electron pulses with 5 ps length at 20 MeV. The different dose rates are reached by adjusting the number of electrons in one beam pulse. Three clinical dosimeters (TLD, OSL, and EBT radiochromic films) were irradiated with four different dose rates and nearly the same dose. A faraday cup, an integrating current transformer, and an ionization chamber were used to control the particle flux on the dosimeters. Furthermore two diamond detectors were tested. Results: The dosimeters are dose rate independent up to 4•109 Gy/s within 2% (OSL and TLD) and up to 15•109 Gy/s within 5% (EBT films). The diamond detectors show strong dose rate dependence. Conclusions: TLD, OSL dosimeters, and EBT films are suitable for pulsed beams with a very high pulse dose rate like laser accelerated particle beams. [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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 74978822 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Dose rate dependence for different dosimeters and detectors: TLD, OSL, EBT films, and diamond detectors. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Karsch%2C+L%2E%22">Karsch, L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Beyreuther%2C+E%2E%22">Beyreuther, E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Burris-Mog%2C+T%2E%22">Burris-Mog, T.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kraft%2C+S%2E%22">Kraft, S.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Richter%2C+C%2E%22">Richter, C.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zeil%2C+K%2E%22">Zeil, K.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Pawelke%2C+J%2E%22">Pawelke, J.</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Medical+Physics%22">Medical Physics</searchLink>. May2012, Vol. 39 Issue 5, p2447-2455. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Radiation+dosimetry%22">Radiation dosimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+detectors%22">Metal detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoluminescence+dosimetry%22">Thermoluminescence dosimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Evidence-based+psychotherapy%22">Evidence-based psychotherapy</searchLink><br /><searchLink fieldCode="DE" term="%22Iontophoresis%22">Iontophoresis</searchLink><br /><searchLink fieldCode="DE" term="%22Diamonds%22">Diamonds</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+lasers%22">Medical lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Radiotherapy%22">Radiotherapy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Purpose: The use of laser accelerators in radiation therapy can perhaps increase the low number of proton and ion therapy facilities in some years due to the low investment costs and small size. The laser-based acceleration technology leads to a very high peak dose rate of about 1011 Gy/s. A first dosimetric task is the evaluation of dose rate dependence of clinical dosimeters and other detectors. Methods: The measurements were done at ELBE, a superconductive linear electron accelerator which generates electron pulses with 5 ps length at 20 MeV. The different dose rates are reached by adjusting the number of electrons in one beam pulse. Three clinical dosimeters (TLD, OSL, and EBT radiochromic films) were irradiated with four different dose rates and nearly the same dose. A faraday cup, an integrating current transformer, and an ionization chamber were used to control the particle flux on the dosimeters. Furthermore two diamond detectors were tested. Results: The dosimeters are dose rate independent up to 4•109 Gy/s within 2% (OSL and TLD) and up to 15•109 Gy/s within 5% (EBT films). The diamond detectors show strong dose rate dependence. Conclusions: TLD, OSL dosimeters, and EBT films are suitable for pulsed beams with a very high pulse dose rate like laser accelerated particle beams. [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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1118/1.3700400 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 2447 Subjects: – SubjectFull: Radiation dosimetry Type: general – SubjectFull: Metal detectors Type: general – SubjectFull: Thermoluminescence dosimetry Type: general – SubjectFull: Evidence-based psychotherapy Type: general – SubjectFull: Iontophoresis Type: general – SubjectFull: Diamonds Type: general – SubjectFull: Medical lasers Type: general – SubjectFull: Radiotherapy Type: general Titles: – TitleFull: Dose rate dependence for different dosimeters and detectors: TLD, OSL, EBT films, and diamond detectors. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Karsch, L. – PersonEntity: Name: NameFull: Beyreuther, E. – PersonEntity: Name: NameFull: Burris-Mog, T. – PersonEntity: Name: NameFull: Kraft, S. – PersonEntity: Name: NameFull: Richter, C. – PersonEntity: Name: NameFull: Zeil, K. – PersonEntity: Name: NameFull: Pawelke, J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 00942405 Numbering: – Type: volume Value: 39 – Type: issue Value: 5 Titles: – TitleFull: Medical Physics Type: main |
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