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Thermoluminescent behaviour of diamond films subjected to UV irradiation |
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| Authors: | L M Apátiga V M Castaño J I Golzarri J García M F Alba |
| Affiliation: | (1) Ph. D. student at Universidad Autónoma de Querétaro, Instituto de Física, UNAM, A.P. 1-1010, 76000 Querétaro, Qro., México e-mail: meneses@servidor.unam.mx or castano@marta.phys.unt.edu Fax: 52(-42)-3811-65) , MX;(2) Instituto de Física, UNAM, A.P. 20-364, 01000 México, D.F. México, MX |
| Abstract: | The thermoluminescent behaviour of diamond films subjected to UV irradiation was studied by using an UV lamp of 254 nm wavelength. The UV irradiation was achieved by placing the samples 15 cm away from an UV source for different periods. The thermoluminescent signal was integrated from 0 to 350°C at a linear heating rate of 10°C/s in a N2 atmosphere. The corresponding luminescence spectra show an excitation band centered at 450 nm while the emission band is centered around 500 nm at room temperature. The diamond films were synthesized on molybdenum substrates by the combustion flame technique and characterized by Raman spectroscopy and scanning electron microscopy. Received: 31 May 1999 / Reviewed and accepted: 22 July 1999 |
| Keywords: | Diamond films Thermoluminescence Luminescence UV detectors Diamond synthesis Combustion flame technique Scanning electron microscopy Raman spectroscopy Lithium fluoride dosimeter Radiation dosimetry |
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