Search

Your search keyword '"Panzeca, S"' showing total 3 results
Start Over Author "Panzeca, S" Publisher oxford university press
3 results on '"Panzeca, S"'

1. EPR/ALANINE PELLETS WITH LOW Gd CONTENT FOR NEUTRON DOSIMETRY

Author

Maurizio Marrale, Elio Angelo Tomarchio, Alberto Zeffiro, Luigi Tranchina, A. Carlino, Aldo Parlato, Maria Brai, Daniele Dondi, Anna Longo, Armando Buttafava, Salvatore Panzeca, Marrale, M, Brai, M, Longo, A, Panzeca, S, Carlino, A, Tranchina, L, Tomarchio, E, Parlato, A, Buttafava, A, Dondi, D, and Zeffiro, A

Subjects
inorganic chemicals, Materials science, Gadolinium, Analytical chemistry, chemistry.chemical_element, Radiation Dosage, law.invention, Boric acid, chemistry.chemical_compound, Boric Acids, Isotopes, law, Radiology, Nuclear Medicine and imaging, Neutron, Irradiation, Boron, Electron paramagnetic resonance, Radiometry, Neutrons, Radiation, Alanine, Radiological and Ultrasound Technology, business.industry, Electron paramagnetic resonance (EPR), alanine pellet, gadolinium, Monte Carlo (MC) simulation, dosimetry, Doping, technology, industry, and agriculture, Public Health, Environmental and Occupational Health, Electron Spin Resonance Spectroscopy, General Medicine, Neutron temperature, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), chemistry, Nuclear medicine, business, Monte Carlo Method
Abstract

This paper reports on results obtained by electron paramagnetic resonance (EPR) measurements and Monte Carlo (MC) simulation on a blend of alanine added with low content of gadolinium oxide (5 % by weight) to improve the sensitivity to thermal neutron without excessively affecting tissue equivalence. The sensitivity is enhanced by this doping procedure of more an order of magnitude. The results are compared with those obtained with the addition of boric acid (50 % by weight) where boron is in its natural isotopic composition in order to produce low-cost EPR dosemeters. The gadolinium addition influences neutron sensitivity more than the boron addition. The presence of additives does not substantially change the fading of the EPR signal induced by neutrons. The MC simulations agree the experimental results in case of gadolinium addition.

Published
2013

2. EPR/alanine pellets with low Gd content for neutron dosimetry.

Author

Marrale M, Brai M, Longo A, Panzeca S, Carlino A, Tranchina L, Tomarchio E, Parlato A, Buttafava A, Dondi D, and Zeffiro A

Subjects
Boric Acids chemistry, Electron Spin Resonance Spectroscopy instrumentation, Isotopes, Monte Carlo Method, Radiation Dosage, Radiometry instrumentation, Alanine chemistry, Electron Spin Resonance Spectroscopy methods, Gadolinium chemistry, Neutrons, Radiometry methods
Abstract

This paper reports on results obtained by electron paramagnetic resonance (EPR) measurements and Monte Carlo (MC) simulation on a blend of alanine added with low content of gadolinium oxide (5 % by weight) to improve the sensitivity to thermal neutron without excessively affecting tissue equivalence. The sensitivity is enhanced by this doping procedure of more an order of magnitude. The results are compared with those obtained with the addition of boric acid (50 % by weight) where boron is in its natural isotopic composition in order to produce low-cost EPR dosemeters. The gadolinium addition influences neutron sensitivity more than the boron addition. The presence of additives does not substantially change the fading of the EPR signal induced by neutrons. The MC simulations agree the experimental results in case of gadolinium addition., (© The Author 2013. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)

Published
2014
Full Text
View/download PDF

3. Neutron ESR dosimetry through ammonium tartrate with low Gd content.

Author

Marrale M, Brai M, Longo A, Panzeca S, Tranchina L, Tomarchio E, Parlato A, Buttafava A, and Dondi D

Subjects
Gadolinium chemistry, Monte Carlo Method, Radiation Dosage, Tartrates chemistry, Electron Spin Resonance Spectroscopy methods, Gadolinium radiation effects, Neutrons, Radiometry methods, Tartrates radiation effects
Abstract

This paper continues analyses on organic compounds for application in neutron dosimetry performed through electron spin resonance (ESR). Here, the authors present the results obtained by ESR measurements of a blend of ammonium tartrate dosemeters and gadolinium oxide (5 % by weight). The choice of low amount of Gd is due to the need of improving neutron sensitivity while not significantly influencing tissue equivalence. A study of the effect of gadolinium presence on tissue equivalence was carried out. The experiments show that the neutron sensitivity is enhanced by more than an order of magnitude even with this small additive content. Monte Carlo simulations on the increment of energy release due to gadolinium presence were carried, and the results were in good agreement with the experimental data., (© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results