Abstract
Window silicate glass powder has been evaluated as a possible high dose dosimeter using EPR (Electron Paramagnetic Resonance) technique. In this work window glass powder with maximum dimension of 700μm was irradiated with 10MeV electrons with doses ranging from 580Gy to 46.52kGy. The EPR response of the irradiated samples showed a linear behavior to applied doses up to 8kGy. The EPR spectra of NBOHC (Non-Bonding Oxygen Hole Center) was found at g1=2.0092±0.0001 and g2=2.0042±0.0001. The line widths of all spectra were found to be the same. Finally, the thermal fading of EPR intensity was studied for 70days and showed a sharp decline on the first day. This fading continued up to almost 15days and then the slope of the decay-curve tended to gradual changes up to 50days. Afterwards, it presented a fairly constant value with time and a predictable stability was achieved.
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