Anomalous behaviour of thermoluminescence from quartz: A case of glow peaks from a Nigerian quartz

Ogundare, F.O. and Chithambo, M.L. and Oniya, E.O. (2006) Anomalous behaviour of thermoluminescence from quartz: A case of glow peaks from a Nigerian quartz. Radiation Measurements, 41 (5). pp. 549-553. ISSN 1350-4487

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Official URL: http://dx.doi.org/10.1016/j.radmeas.2006.03.001

Abstract

Anomalous behaviour displayed by a thermoluminescence (TL) glow peak as radiation dose increases in a Nigerian quartz is presented. The glow curves of the phosphor have four clear glow peaks. The peak temperatures of the first three glow peaks were found to be constant with change in radiation dose at 82, 148 and 200ºC for the sample readout at a heating rate of 1ºCs[superscript (-1)]. The peak temperature of the fourth peak, which is at around 320ºC for a sample irradiated to a dose of 63 Gy and heated at 1ºCs[superscript (-1)], displays anomalous behaviour with increase in dose relative to the first three peaks. The temperature at which this peak occurs increases with dose to about 335ºC for 177 Gy and then decreases thereafter as dose is further increased. The change is explained on the assumption that the peak may be complex consisting of several overlapping first-order glow peaks each with different TL behaviour.

Item Type:Article
Additional Information:Corresponding author: F.O. Ogundare, Physics Department, University of Ibadan, Ibadan, Nigeria. Tel./fax: +234 28 10 5116. E-mail: ogun_dare@yahoo.com
Uncontrolled Keywords:SYNTHETIC QUARTZ; DOSE DEPENDENCE; FIRED QUARTZ; RED TL; BLUE; SUPERLINEARITY; LUMINESCENCE; SENSITIVITY; EMISSION; PREDOSE
Subjects:Y Unknown > Subjects to be assigned
Divisions:Faculty > Faculty of Science > Physics & Electronics
ID Code:418
Deposited By: Mrs Eileen Shepherd
Deposited On:23 Oct 2006
Last Modified:06 Jan 2012 16:18
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