Speaker
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
-
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
No
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
Phototransferred thermoluminescence (PTTL) in synthetic quartz samples implanted with 70 keV Ar ions at fluences ranging from 1x10E14 and 5x10E15 ions/cm2 is reported. Subsequent to 40 Gy beta irradiation and pre-heating, PTTL was monitored as a function of illumination time from the main glow peak at 120°C using a Risø TL/OSL reader. It was observed that the PTTL signal only appears in the sample implanted at higher fluences while absent in other implanted samples. This suggests that at lower fluences the deep traps responsible for the PTTL cannot be accessed. For the sample implanted at higher fluence, the results show that the PTTL intensity increases with illumination time from 3 s to 20 s and then starts decreasing for higher illumination times. The decrease in the PTTL intensity is an indication of a loss of electrons from the trap responsible for PTTL to other traps not giving rise to the PTTL. This is evidenced by an increase in intensity of the glow curve peak at 200°C under the illumination process.
Main supervisor (name and email)<br>and his / her institution
-
Apply to be<br> considered for a student <br> award (Yes / No)?
No
