Abstract
The uv excited glow peaks at -150 K and -250 K were investigated. The mainly blue thermoluminescence (TL) peak appearing at 150 K in semiconducting diamonds was found to have also red and infrared components all appearing at the same temperature. Another red peak appearing at 260 K included an infrared component at a somewhat higher temperature. The intensity of this red peak behaved superlinearly with the dose of the 360 nm excitation. It was possible to pre-excite the 250 K blue peak using infrared light when the exciting light was 225 nm; however, this caused a partial bleaching of the 150 K blue peak. The investigation also included pre-excitation at various temperatures, intensity vs dose measurements of pre-excitation, and intensity vs dose measurements at various temperatures. It was found that the red TL peak produced by 500 nm could be excited more efficiently at 180 K than at liquid nitrogen temperature. The energy level model is reviewed in accordance with the new results.
Original language | English |
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Pages (from-to) | 4804-4809 |
Number of pages | 6 |
Journal | The Journal of Chemical Physics |
DOIs | |
State | Published - 1974 |