Thermoluminescence and electron paramagnetic resonance (EPR) studies of mineral chrysocolla (dioptase)

Authors
Selvin, PC Watanabe, S Ayala-Arenas, JS
Citation
Pc. Selvin et al., Thermoluminescence and electron paramagnetic resonance (EPR) studies of mineral chrysocolla (dioptase), RADIAT PH C, 61(3-6), 2001, pp. 531-533
Citations number
4
Categorie Soggetti
Physics
Journal title
RADIATION PHYSICS AND CHEMISTRY
ISSN journal
0969806X → ACNP
Volume
61
Issue
3-6
Year of publication
2001
Pages
531 - 533
Database
ISI
SICI code
0969-806X(200106)61:3-6<531:TAEPR(>2.0.ZU;2-S
Abstract
The natural mineral chrysocolla (CuSiO3. 2H(2)O) has been investigated in t erms of thermally stimulated luminescence and EPR measurements. The glow cu rves for natural samples present three glow peaks at 190, 357 and 450 degre esC. Pre annealed and subsequently irradiated samples give rise to four glo w peaks at 140 degreesC, 193 degreesC, 305 degreesC and 450 degreesC. The f ormation of Ho centers at the expense of water molecules present in the cha nnels has been identified by EPR measurements. (C) 2001 Elsevier Science Lt d. All rights reserved.