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Radiation Protection Dosimetry Advance Access originally published online on April 10, 2006
Radiation Protection Dosimetry 2006 119(1-4):218-221; doi:10.1093/rpd/nci663
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

New Al2O3:C,Mg crystals for radiophotoluminescent dosimetry and optical imaging

Mark S. Akselrod* and Anna E. Akselrod

Landauer, Stillwater Crystal Growth Division, 723 1/2 Eastgate Road Stillwater OK, 74074, USA

* Corresponding author: makselrod{at}landauerinc.com

Optical and dosimetric properties of a new radiophotoluminescent material based on aluminum oxide doped with carbon and magnesium (Al2O3:C,Mg) and having aggregate oxygen vacancy defects are presented. The Al2O3:C,Mg crystals are characterized by several new optical absorption and emission bands. It is suggested that the main optical properties of this material are due to the formation of aggregate defects composed of two oxygen vacancies and two Mg-impurity atoms. Radiation-induced optical absorption bands are centered at 335 and 620 nm and produce fluorescent emission at 750 nm with a 75 ± 5 ns lifetime. The dose measurements are performed by illumination of the Al2O3:C,Mg crystal with 335 nm or 650 nm light and by measuring the intensity of the 750 nm fluorescence. The detector material is insensitive to room light before and after the irradiation and the traps are stable up to 600°C. A dose measurement range between 5 mGy and 200 Gy, suitable for therapeutic radiology applications, was demonstrated. The short luminescent lifetime and nondestructive readout is favorable for imaging applications.


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This article has been cited by other articles:


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 Radiat Prot DosimetryHome page
G. J. Sykora, M. S. Akselrod, M. Salasky, and S. A. Marino
Novel Al2O3:C,Mg fluorescent nuclear track detectors for passive neutron dosimetry
Radiat Prot Dosimetry, August 1, 2007; 126(1-4): 278 - 283.
[Abstract] [Full Text] [PDF]

Home page
 Radiat Prot DosimetryHome page
M. S. Akselrod, R. C. Yoder, and G. M. Akselrod
Confocal fluorescent imaging of tracks from heavy charged particles utilising new Al2O3:C,Mg crystals
Radiat Prot Dosimetry, September 1, 2006; 119(1-4): 357 - 362.
[Abstract] [Full Text] [PDF]


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