Synthesis and structural characterization of Al2O3 nanoparticles: Towards 3D optically stimulated luminescence dosimetry

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Abstract

Advanced radiotherapy techniques, which plan and deliver a treatment in complicated 3D geometries with steep dose gradients, push 3D dosimetry with correspondingly high spatial resolution to the top of scientific and clinical agendas. This paper presents the first steps taken towards an inexpensive and reusable material for 3D dosimetry based on optically stimulated luminescence (OSL). Carbon-doped alumina (Al 2O 3:C) nanoparticles were synthesized using supercritical flow synthesis, in which product properties can be finely controlled. The particles were characterized using electron microscopy and powder x-ray diffraction. C-doping did not alter the crystallographic structure appreciably, and a high elemental signal from C could be measured. Nanoparticles of amorphous γγ-Al 2O 3:C were achieved, however calcining these to produce the OSL-relevant αα-phase yielded microparticles. Future work will aim at producing phase-pure αα-Al 2O 3:C nanoparticles with a narrow size distribution below 10 nm, and controllable C-concentration and O-deficiency.

Translated title of the contributionSyntese og strukturel karakterisering af Al2O3 nanopartikler: Imod 3D optisk stimuleret luminescens dosimetri
Original languageEnglish
Article number012023
JournalJournal of Physics: Conference Series
Volume2167
Issue1
Number of pages6
ISSN1742-6588
DOIs
Publication statusPublished - 2022
EventIC3DDose: 11th International Conference on 3D Radiation Dosimetry - Quebec, Canada
Duration: 15 Jun 202115 Jun 2021
Conference number: 11

Conference

ConferenceIC3DDose: 11th International Conference on 3D Radiation Dosimetry
Number11
Country/TerritoryCanada
CityQuebec
Period15/06/202115/06/2021

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