Gemological modification of local natural gemstones by ion beams

Gemological modification of local natural gemstones by ion beams

Ion implantation was applied as an effective method to gemological modification of Thai local natural corundum including sapphire and ruby for enhancement of the essential qualities of the gemstones. Oxygen and nitrogen ions at medium and low energies to various fluences were implanted to the natura...

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Main Authors: S. Intarasiri, D. Bootkul, L. D. Yu, T. Kamwanna, S. Singkarat, T. Vilaithong
Format: Journal
Published: 2018
Subjects:
Chemistry
Materials Science
Physics and Astronomy
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67349212893&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/59477
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Institution: Chiang Mai University
id th-cmuir.6653943832-59477
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spelling th-cmuir.6653943832-594772018-09-10T03:25:05Z Gemological modification of local natural gemstones by ion beams S. Intarasiri D. Bootkul L. D. Yu T. Kamwanna S. Singkarat T. Vilaithong Chemistry Materials Science Physics and Astronomy Ion implantation was applied as an effective method to gemological modification of Thai local natural corundum including sapphire and ruby for enhancement of the essential qualities of the gemstones. Oxygen and nitrogen ions at medium and low energies to various fluences were implanted to the natural gemstones. The heavy ion irradiation modifies the color to desirable colors and improves the color distribution, transmission and lustre. These modifications lead to the improvement of quality of gemstones and thus the market value. Possible mechanisms of these modifications have been proposed. The main cause for these modifications could be the changes in oxidation states of impurity metals, induction of charge transfer from one metal cation to other and the production of color centres. © 2009 Elsevier B.V. All rights reserved. 2018-09-10T03:15:46Z 2018-09-10T03:15:46Z 2009-06-15 Journal 02578972 2-s2.0-67349212893 10.1016/j.surfcoat.2009.02.122 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67349212893&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/59477
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
Materials Science
Physics and Astronomy
spellingShingle Chemistry
Materials Science
Physics and Astronomy
S. Intarasiri
D. Bootkul
L. D. Yu
T. Kamwanna
S. Singkarat
T. Vilaithong
Gemological modification of local natural gemstones by ion beams
description Ion implantation was applied as an effective method to gemological modification of Thai local natural corundum including sapphire and ruby for enhancement of the essential qualities of the gemstones. Oxygen and nitrogen ions at medium and low energies to various fluences were implanted to the natural gemstones. The heavy ion irradiation modifies the color to desirable colors and improves the color distribution, transmission and lustre. These modifications lead to the improvement of quality of gemstones and thus the market value. Possible mechanisms of these modifications have been proposed. The main cause for these modifications could be the changes in oxidation states of impurity metals, induction of charge transfer from one metal cation to other and the production of color centres. © 2009 Elsevier B.V. All rights reserved.
format Journal
author S. Intarasiri
D. Bootkul
L. D. Yu
T. Kamwanna
S. Singkarat
T. Vilaithong
author_facet S. Intarasiri
D. Bootkul
L. D. Yu
T. Kamwanna
S. Singkarat
T. Vilaithong
author_sort S. Intarasiri
title Gemological modification of local natural gemstones by ion beams
title_short Gemological modification of local natural gemstones by ion beams
title_full Gemological modification of local natural gemstones by ion beams
title_fullStr Gemological modification of local natural gemstones by ion beams
title_full_unstemmed Gemological modification of local natural gemstones by ion beams
title_sort gemological modification of local natural gemstones by ion beams
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67349212893&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/59477
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