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Anion defective α-Al2O3:C crystals having an intense low temperature TL peak were developed using a post-growth thermal impurification (PGTI) technique. The developed samples were studied using optical absorption (OA), thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques. The samples show two clear TL glow peaks at 64 and 175∘C for a 4K/s heating rate. It was found that abrupt...
Single-crystal α -Al 2 O 3 (10x10mm 2 ,0.4mm thick) was treated in vacuum at temperatures below its melting point in the presence of graphite. The possibility of this approach as an alternative method to the crystal growth in the reduced atmosphere for obtaining dosimetry grade α -Al 2 O 3 :C for TL and OSL dosimetry applications has been explored. The absorption...
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