Optical absorbance and dynamic light scattering studies of Fricke xylenol orange gel dosimeters loaded with laponite were carried out with the aim to investigate possible effects of nanoparticles on the dosimetric properties and diffusion phenomena of ferric ions. A procedure for incorporating laponite nano-sized clay particles into the gel dosimeters, prepared using porcine gelatine as gelling agent, was successfully developed. The shape of the optical absorbance spectra of the gel dosimeters in the wavelength interval 350–750 nm have shown a slight dependence on the nanoparticles concentration and varied with the absorbed dose. All studied gel exhibited a linear dose response in the investigated interval 0–22 Gy. Neither the sensitivity to the radiation dose nor the diffusion coefficient were significantly altered by the addition of laponite into the Fricke xylenol orange gel formulation employed.

Study of the effect of laponite on Fricke xylenol orange gel dosimeter by optical techniques / S. Gallo, L. Cremonesi, G.L.C. Gambarini, L. Ianni, C. Lenardi, S. Argentiere, D. Bettega, M. Gargano, N.G. Ludwig, I. Veronese. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - 272(2018 Nov 01), pp. 618-625. [10.1016/j.snb.2018.05.153]

Study of the effect of laponite on Fricke xylenol orange gel dosimeter by optical techniques

S. Gallo
Primo
Formal Analysis
;
G.L.C. Gambarini
Validation
;
C. Lenardi
Resources
;
S. Argentiere
Formal Analysis
;
D. Bettega
Membro del Collaboration Group
;
M. Gargano
Membro del Collaboration Group
;
N.G. Ludwig
Membro del Collaboration Group
;
I. Veronese
Ultimo
Supervision
2018-11-01

Abstract

Optical absorbance and dynamic light scattering studies of Fricke xylenol orange gel dosimeters loaded with laponite were carried out with the aim to investigate possible effects of nanoparticles on the dosimetric properties and diffusion phenomena of ferric ions. A procedure for incorporating laponite nano-sized clay particles into the gel dosimeters, prepared using porcine gelatine as gelling agent, was successfully developed. The shape of the optical absorbance spectra of the gel dosimeters in the wavelength interval 350–750 nm have shown a slight dependence on the nanoparticles concentration and varied with the absorbed dose. All studied gel exhibited a linear dose response in the investigated interval 0–22 Gy. Neither the sensitivity to the radiation dose nor the diffusion coefficient were significantly altered by the addition of laponite into the Fricke xylenol orange gel formulation employed.
Fricke gel dosimeter; optical absorbance spectra; diffusion coefficient; laponite; dynamic light scattering
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Settore FIS/01 - Fisica Sperimentale
Settore FIS/03 - Fisica della Materia
Settore CHIM/02 - Chimica Fisica
26-mag-2018
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/581618
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