Title
Thermoluminescence and electron paramagnetic resonance (EPR) studies of mineral chrysocolla (dioptase)
Date Issued
01 January 2001
Access level
metadata only access
Resource Type
journal article
Author(s)
University of Sao Paulo
Abstract
The natural mineral chrysocolla (CuSiO3·2H2O) has been investigated in terms of thermally stimulated luminescence and EPR measurements. The glow curves for natural samples present three glow peaks at 190, 357 and 450°C. Pre annealed and subsequently irradiated samples give rise to four glow peaks at 140°C, 193°C, 305°C and 450°C. The formation of Ho centers at the expense of water molecules present in the channels has been identified by EPR measurements. © 2001 Elsevier Science Ltd. All rights reserved.
Start page
531
End page
533
Volume
61
Issue
June 3
Language
English
OCDE Knowledge area
Química física
Física y Astronomía
Subjects
Scopus EID
2-s2.0-0034897032
Source
Radiation Physics and Chemistry
ISSN of the container
0969806X
Sponsor(s)
This work was supported by FAPESP and CNPq. One of us, P.C. Selvin gratefully acknowledges FAPESP for a fellowship. The help rendered by Mr. W.E.F. Ayta throughout the course of this study is gratefully acknowledged.
Sources of information:
Directorio de Producción Científica
Scopus