Title
Study of luminescence, color and paramagnetic centers properties of albite
Date Issued
25 February 2015
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad de Sao Paulo
Publisher(s)
Elsevier B.V.
Abstract
A sample of natural albite, NaAlSi3O8, from the state of Minas Gerais, Brazil, has been investigated. The mineral is a solid solution of K-feldspar (4600 ppm - K) and Ca-feldspar (1100 ppm - Ca). The TL spectra of natural and the pre-annealed at high temperature albite presented a very intense band around 275 nm and weaker bands around 400 and 560 nm. Other TL properties have been investigated through monochromatic (275 nm and 400 nm) glow curves. The EPR spectrum measured at low temperature (77 K) shows the typical 11 lines signal due to Al-O--Al center superposed on Fe3+signal around g = 2.0. The EPR spectra above 260 K show only g = 2.0 signal due to Fe3+ions.
Start page
471
End page
476
Volume
137
Language
English
OCDE Knowledge area
Electroquímica
Óptica
Subjects
Scopus EID
2-s2.0-84907191491
PubMed ID
Source
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ISSN of the container
13861425
Sponsor(s)
The authors wish to thank Ms. E. Somessari and Mr. C. Gaia, Instituto de Pesquisas Energeticas e Nucleares (IPEN), Brazil, for kindly carrying out the irradiation of the samples. This work had financial support from FAPESP and CNPq.
Sources of information:
Directorio de Producción Científica
Scopus