In this work we report some preliminary results regarding the analysis of electron paramagnetic resonance (EPR) response of alanine pellets and alanine pellets added with gadolinium used for dosimetry at the TRIGA research reactor in Mainz, Germany. Two set-ups were evaluated: irradiation inside PMMA phantom and irradiation inside boric acid phantom. We observed that the presence of Gd2O3 inside alanine pellets increases the EPR signal by a factor of 3.45 and 1.24 in case of PMMA and boric acid phantoms, respectively. We can conclude that in the case of neutron beam with a predominant thermal neutron component the addition of gadolinium oxide can significantly improve neutron sensitivity of alanine pellets. Monte Carlo (MC) simulations of both response of alanine and Gd-added alanine pellets with FLUKA code were performed and a good agreement was achieved for pure alanine dosimeters. For Gd2O3-alanine deviations between MC simulations and experimental data were observed and discussed.
Comparison of EPR response of alanine and Gd2O3-alanine dosimeters exposed to TRIGA Mainz reactor / M. Marrale, T. Schmitz, S. Gallo, G. Hampel, A. Longo, S. Panzeca, L. Tranchina. - In: APPLIED RADIATION AND ISOTOPES. - ISSN 0969-8043. - 106(2015 Dec), pp. 116-120. ((Intervento presentato al 16. convegno International Congress on Neutron Capture Therapy (ICNCT) tenutosi a Helsinki nel 2014.
|Titolo:||Comparison of EPR response of alanine and Gd2O3-alanine dosimeters exposed to TRIGA Mainz reactor|
GALLO, SALVATORE (Secondo)
|Parole Chiave:||Alanine; Electron spin resonance; Gadolinium; NCT dosimetry; Triga reactor Mainz|
|Settore Scientifico Disciplinare:||Settore FIS/01 - Fisica Sperimentale|
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Settore ING-IND/20 - Misure e Strumentazione Nucleari
|Data di pubblicazione:||dic-2015|
|Data ahead of print / Data di stampa:||18-ago-2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.apradiso.2015.08.016|
|Appare nelle tipologie:||01 - Articolo su periodico|