Combined TL and 10B-alanine ESR dosimetry for BNCT

The dosimetric technique described in this paper is based on electron spin resonance (ESR) detectors using an alanine–boric compound acid enriched with 10B, and beryllium oxide thermoluminescent (TL) detectors; with this combined dosimetry, it is possible to discriminate the doses due to thermal neu...

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Bibliographic Details
Published in:	Radiation protection dosimetry Vol. 110; no. 1-4; pp. 627 - 630
Main Authors:	Bartolotta, A., D'Oca, M. C., Lo Giudice, B., Brai, M., Borio, R., Forini, N., Salvadori, P., Manera, S.
Format:	Journal Article
Language:	English
Published:	England Oxford University Press 01-08-2004
Subjects:	Body Burden Boron - radiation effects Boron Neutron Capture Therapy - instrumentation Boron Neutron Capture Therapy - methods Electron Spin Resonance Spectroscopy - methods Gamma Rays - therapeutic use Humans Isotopes - radiation effects Neutrons - therapeutic use Radiation Protection - methods Radiotherapy Dosage Radiotherapy Planning, Computer-Assisted - instrumentation Radiotherapy Planning, Computer-Assisted - methods Relative Biological Effectiveness Reproducibility of Results Risk Assessment - methods Sensitivity and Specificity Systems Integration Thermoluminescent Dosimetry - instrumentation Thermoluminescent Dosimetry - methods
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Summary:	The dosimetric technique described in this paper is based on electron spin resonance (ESR) detectors using an alanine–boric compound acid enriched with 10B, and beryllium oxide thermoluminescent (TL) detectors; with this combined dosimetry, it is possible to discriminate the doses due to thermal neutrons and gamma radiation in a mixed field. Irradiations were carried out inside the thermal column of a TRIGA MARK II water–pool-type research nuclear reactor, also used for Boron Neutron Capture therapy (BNCT) applications, with thermal neutron fluence from 109 to 1014 nth cm−2. The ESR dosemeters using the alanine–boron compound indicated ESR signals about 30-fold stronger than those using only alanine. Moreover, a negligible correction for the gamma contribution, measured with TL detectors, almost insensitive to thermal neutrons, was necessary. Therefore, a simultaneous analysis of our TL and ESR detectors allows discrimination between thermal neutron and gamma doses, as required in BNCT.
Bibliography:	ark:/67375/HXZ-HJBX6QHB-D istex:659BEBCE9B859BD11466E921F2929CD3DBDA6A84 local:nch110 Corresponding author: antonio.bartolotta@unipa.it
ISSN:	0144-8420 1742-3406
DOI:	10.1093/rpd/nch110