Dynamics of a low-density exciton system is simulated using the kinetic Monte Carlo algorithm. The temperature dependences photoluminescence (PL) intensity and PL band Stokes shift in high-Al-content AlGaN epi­layer are calculated fitted to experimentally measured ones. key features nonradiative recombination via delocalized states direct tunnelling centres their influence on efficiency analyse...

The quenching of quinine fluorescence intensity in the presence of some anions in aqueous solution at ambient temperature has been investigated. The quenching is found to be collisional or dynamical in nature. This study reveals the order of two groups of quencher: NaI > NaBr > NaCl > NaF and K2Cr2O7 > KMnO4 >Na2SO4 > NaClO3. Increasing anion size in the both groups leads to an  increase in the...

Abstract Movement of carbon atoms to dislocations reduces the specific volume martensite phase, which, in turn, affects general level volumetric changes that occur as a result phase transformations during quenching. The measurements carried out on samples steel ShX15 showed minimum increase geometric dimensions is observed. Intermediate tempering and re-quenching do not change this pattern. At ...