Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Correlations between admixtures and color centers created upon irradiation of natural beryl crystals

Correlations between admixtures and color centers created upon irradiation of natural beryl crystals Colorless samples of natural beryl which are of little value were irradiated by a neutron flux from a reactor, gamma rays from a shutdown reactor, and gamma rays from a 60Co source to impart gem color to them. As a result of selection of irradiation conditions for samples of pale aquamarines and emeralds, different sample colors were obtained. It was shown using neutron activation and x-ray radiometric methods that the acquired colors and hues of beryl crystals depend on the presence and content of Ca, Sc, Ti, V, Fe, and Co admixtures. It was established from optical absorption, reflection, and luminescence spectra that the induced color centers are related to replacement of cation site of structure by impurities. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Inorganic Materials Springer Journals

Correlations between admixtures and color centers created upon irradiation of natural beryl crystals

Download PDF
6 pages

Loading next page...
 
/lp/springer-journals/correlations-between-admixtures-and-color-centers-created-upon-z6HwPtB6lU

References (3)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Chemistry; Materials Science, general; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry
ISSN
0020-1685
eISSN
1608-3172
DOI
10.1134/S0020168509020101
Publisher site
See Article on Publisher Site

Abstract

Colorless samples of natural beryl which are of little value were irradiated by a neutron flux from a reactor, gamma rays from a shutdown reactor, and gamma rays from a 60Co source to impart gem color to them. As a result of selection of irradiation conditions for samples of pale aquamarines and emeralds, different sample colors were obtained. It was shown using neutron activation and x-ray radiometric methods that the acquired colors and hues of beryl crystals depend on the presence and content of Ca, Sc, Ti, V, Fe, and Co admixtures. It was established from optical absorption, reflection, and luminescence spectra that the induced color centers are related to replacement of cation site of structure by impurities.

Journal

Inorganic Materials – Springer Journals

Published: Feb 7, 2009

There are no references for this article.