Novel Al2O3:C,Mg fluorescent nuclear track detectors for passive neutron dosimetry

The latest advances in the development of a fluorescent nuclear track detector (FNTD) for neutron and heavy charged particle dosimetry are described and compared with CR-39 plastic nuclear etched track detectors (PNTDs). The technique combines a new luminescent aluminium oxide single crystal detecto...

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Bibliographic Details
Published in:Radiation protection dosimetry 2007-01, Vol.126 (1-4), p.278-283
Main Authors: Sykora, G. Jeff, Akselrod, Mark S., Salasky, M., Marino, Stephen A.
Format: Article
Language:English
Subjects:
Aluminum Oxide - radiation effects
Equipment Design
Equipment Failure Analysis
Linear Energy Transfer
Neutrons
Optics and Photonics - instrumentation
Radiation Dosage
Radiation Monitoring - instrumentation
Radiation Monitoring - methods
Radiation Protection - instrumentation
Radiation Protection - methods
Reproducibility of Results
Sensitivity and Specificity
Spectrometry, Fluorescence - instrumentation
Spectrometry, Fluorescence - methods
Thermoluminescent Dosimetry - instrumentation
Thermoluminescent Dosimetry - methods
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Summary:The latest advances in the development of a fluorescent nuclear track detector (FNTD) for neutron and heavy charged particle dosimetry are described and compared with CR-39 plastic nuclear etched track detectors (PNTDs). The technique combines a new luminescent aluminium oxide single crystal detector (Al2O3:C,Mg) with an imaging technique based on laser scanning and confocal fluorescence detection. Detection efficiency was obtained after irradiations with monoenergetic neutron and proton beams. Dose dependences were measured for different configurations of the detectors exposed in fast- and thermal-neutron fields. A specially developed image processing technique allows for fast fluorescent track identification and counting. The readout method is non-destructive, and detectors can be reused after thermal annealing.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/ncm058