A thin layer fiber-coupled luminescence dosimeter based on Al2O3:C

• Verfasst von: Klein, Felix Alexander [VerfasserIn]
• Verfasst von: Greilich, Steffen [VerfasserIn]
• Verfasst von: Andersen, C. E. [VerfasserIn]
• Verfasst von: Lindvold, L. R. [VerfasserIn]
• Verfasst von: Jäkel, Oliver [VerfasserIn]
• Titel: A thin layer fiber-coupled luminescence dosimeter based on Al2O3:C
• Verf.angabe: F.A. Klein, S. Greilich, C.E. Andersen, L.R. Lindvold, O. Jäkel
• E-Jahr: 2011
• Jahr: 25 May 2011
• Umfang: 3 S.
• Fussnoten: Gesehen am 11.08.2022 ; Im Titel sind die Ziffern 2 und 3 tiefgestellt
• Titel Quelle: Enthalten in: Radiation measurements
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1994
• Jahr Quelle: 2011
• Band/Heft Quelle: 46(2011), 12, Seite 1607-1609
• ISSN Quelle: 1879-0925
• DOI: doi:10.1016/j.radmeas.2011.05.030
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Fiber-coupled
• Sach-SW: High spatial resolution
• Sach-SW: Ion beam therapy
• Sach-SW: Luminescence dosimetry
• Sach-SW: Proton therapy
• Sach-SW: Radioluminesence
• K10plus-PPN: 181418886X

Abstract

In this paper we present a fiber-coupled luminescent Al2O3:C dosimeter probe with high spatial resolution (0.1 mm). It is based on thin layers of Al2O3:C crystal powder and a UV-cured acrylate monomer composition. The fabrication of the thin layers is described in detail. No influence of the introduced polymer host matrix on the dosimetric properties was observed. Depth-dose measurements with the new detectors in a 142.66 MeV proton and 270.55 MeV/u carbon ion beam are presented as example applications. We used an RL protocol with saturated crystals allowing for time-effective measurements without sensitivity corrections. For protons, a relative luminescence efficiency ηHCP of 0.715 ± 0.014 was found in the Bragg peak. For carbon ions, a value of 0.498 ± 0.001 was found in the entrance channel, 0.205 ± 0.015 in the Bragg peak, and a mean of 0.413 ± 0.050 in the tail region. The mean range of the protons measured with this new detector deviated by less than 1% from the reference value. For both ion types, the stem effect contributed less than 0.8% of the RL signal.