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Thermoluminescent LiF:Mg, Ti (TLD-100) micro- particle sensors are demonstrated to record the thermal history of the environment around a high-explosive detonation. Microparticles are gamma-irradiated to fill their charge-carrier traps and then exposed to the detonation of 20 g of a plastic bonded HMX and Al explosive formulation at a test distance of approximately 22 cm from the center of the detonation...
The scintillation properties of pure SrI2 and SrI2 doped with 0.5%, 0.86%, 2%, and 5% europium were studied. Different techniques were used to measure γ-ray excited pulse-height and scintillation decay time spectra, and to perform X-ray excited and optically excited emission spectroscopy. Eu2+ emission and self-trapped exciton (STE) emission was observed in SrI2:Eu2+ samples. These emissions were...
Design and characterization of a new generation of single-photon avalanche diodes (SPAD) array, manufactured by ST-Microelectronics in Catania, Italy, are presented. Device performances, investigated in several experimental conditions and here reported, demonstrate their suitability in many applications. SPADs are thin p-n junctions operating above the breakdown condition in Geiger mode at low voltage...
Unique correlations between the excitonic characteristics and hetero-interface charge distribution of InGaN/GaN multiple quantum well light-emitting diodes (LEDs) were investigated over a broad range of temperatures. The dependence of non-unity ideality factors extracted from the current-voltage analysis on temperature determines the carrier-transport mechanisms in the heterodevices. Furthermore,...
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