Abstract
The newly developed LiF(Mg, Cu, P) phosphor has been investigated for its trap distribution characteristics. The trap distribution analysis, based on a fractional glow technique, shows a number of trap groups (about nine) with activation energies spread over a broad region of 1.2-2.38 eV in a strikingly conspicuous profile unlike that of other common TL phosphors. The main glow peak, centring around 215 degrees C, has been related to very deep traps with energies around 2.35 eV, while other constituent peaks have been ascribed to different trap groups with considerably lower activation energy values. These data on trap distribution characterisation are found to explain the 'unique' TL behaviour of the phosphor, namely the linear TL-dose-response relationship without any supralinearity, reasonably well.
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