Photoluminescent and paramagnetic centers in gamma irradiated porous silica

CARBONARO, CARLO MARIA;CORPINO, RICCARDO;
2005-01-01

Abstract

The photolummescence and electron spin resonance properties of gamma irradiated (up to 500 kGy) porous silica are reported. By exciting at 5.6 eV a photoluminescence contribution can be detected before irradiation, peaked at about 4.1 eV. Gamma irradiation causes the generation of the E' centers (about 1 x 10(14) defects cm(-3)) of paramagnetic hole centers and modifies the photoluminescence properties of the sample: the emission amplitude decreases and three contributions can be singled out at about 3.3, 3.8 and 4.4 eV. (c) 2005 Elsevier B.V. All rights reserved.
2005
JOURNAL OF NON-CRYSTALLINE SOLIDS
351
21-23
1784
1786
3
WOS:000230574700012
2-s2.0-21144451863
Esperti anonimi
Anedda, A; Carbonaro, CARLO MARIA; Corpino, Riccardo; Agnello, S.
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
4
none
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