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Thermally stimulated luminescence and EPR studies on topaz by Divanizia N. Souza; José Fernandes de Lima; Mário Ernesto G. Valerio; Linda V.E. Caldas is a Physics and Astronomy article available to read on EtoBox.

What is Thermally stimulated luminescence and EPR studies on topaz about?

In the present work, electron paramagnetic resonance (EPR) spectra and thermoluminescence (TL) emission of colourless natural topaz from Santo Antoˆnio do Jacinto, Brazil, was studied as a function of thermal treatment and gamma irradiation dose, focussing on the use of this material as a radiation dosimeter. EPR measurements on ''as-received'' samples at room temperature provided signals in the region of about 500 at 5000 G. The signal located around g ffi 2, frequently attributed to (AlO 4 ) 0 , increased with additional gamma dose and disappeared after thermal treatment at 500 1C for 1 h. Irradiation after thermal treatment recovered this signal. The decay promoted by isochronal thermal treatment showed the (AlO 4 ) 0 defects to be directly related to the TL glows peaks. The variation of EPR spectrum with annealing temperature prior to irradiation showed that the variation of TL sensitivity is a consequence of the variation of the (AlO 4 ) 0 population.

Who reads Thermally stimulated luminescence and EPR studies on topaz?

It is typically read by researchers, students, and practitioners in Physics and Astronomy.

Author
Divanizia N. Souza; José Fernandes de Lima; Mário Ernesto G. Valerio; Linda V.E. Caldas
Publisher
Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0969-8043)
Published
2006
Language
EN
Field
Physics and Astronomy (Physical Sciences)

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