Bahadur, Harish and Tissoux, Helene and Usami, Teruo and Toyoda, Shin (2008) Radiation effects in natural quartz crystals. Journal of Materials Science: Materials in Electronics, 19 (8-9). pp. 709-713. ISSN 0957-4522

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Optically clear, as visually observed, natural quartz crystals of Brazilian and Arkansas origins, which exhibit Al–OH–-centers in their as-received conditions,have been measured for their low temperature ESR spectra to see the presence of Al-hole centers. The ESR spectra revealed the presence of Al-hole centers in their as-received conditions. These centers showed an increase in their strength upon irradiation with a 60 C0 source. Such observations were exhibited by Al–OH-centers as noticed earlier. The crystals were thus noticed to exhibit the presence of Al–OH– -centers and also Al-hole centers in their as-received conditions. The observations match with the results on cultured quartz where irradiation breaks away the Al-alkali centers into a mixture of Al–OH–- and Al-hole centers. It is thus concluded that the natural crystals,which exhibit the presence of these centers in their as-received condition, have been irradiated in nature with a low dose.

Item Type: Article
Additional Information: Copyright for this article belongs to M/S Springer.
Subjects: Materials Science
Applied Physics/Condensed Matter
Depositing User: Ms Neetu Chandra
Date Deposited: 03 Mar 2017 11:16
Last Modified: 03 Mar 2017 11:16

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