Mechanisms of TL for production of the 230 degrees C peak in natural sodalite

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Author(s):	Cano, Nilo F. ^{[1, 2]} ; Blak, Ana R. ^[1] ; Ayala-Arenas, Jorge S. ^[2] ; Watanabe, Shigueo ^[1] Total Authors: 4
Affiliation:	^[1] Univ Sao Paulo, Inst Phys, BR-05508090 Sao Paulo - Brazil ^[2] Univ San Agustin Arequipa, Profess Sch Phys, Arequipa - Peru Total Affiliations: 2
Document type:	Journal article
Source:	Journal of Luminescence; v. 131, n. 2, p. 165-168, FEB 2011.
Web of Science Citations:	3
Abstract
The thermoluminescence (TL) peak in natural sodalite near 230 degrees C which appears only after submitted to thermal treatments and to gamma irradiation has been studied in parallel with electron paramagnetic resonance (EPR) spectrum appearing under the same procedure This study revealed a full correlation between the 230 degrees C TL peak and the eleven hyperfine lines from EPR spectrum In both case the centers disappear at the same temperature and are restored after gamma irradiation A complete model for the 230 C TL peak is presented and discussed In addition to the correlation and TL model specific characteristics of the TL peaks are described (C) 2010 Elsevier B V All rights reserved (AU)

FAPESP's process:	07/08008-0 - Intrinsic defects in silicate crystals: numerical calculations in the case of diopside
Grantee:	Nilo Francisco Cano Mamani
Support Opportunities:	Scholarships in Brazil - Post-Doctoral