Showing papers by "National Technical University of Athens published in 1973"
TL;DR: In this article, the solvent extraction yields of Greek lignites have been investigated and it was shown that the yields are generally low compared with the yields from certain American and German lignite, and similar to the yields of Czechoslovakian lignitians.
6 citations
TL;DR: In this article, the authors studied the emission of photon pulses, in the range of 400 to 600 nm, during the dissolution of γ-irradiated alkali halides in water, and found that the rise time, the pulse height, the number of emitted photons, and the decay time are strong functions of temperature.
Abstract: The recently reported emission of photon pulses, in the range of 400 to 600 nm, during the dissolution of γ-irradiated alkali halides in water, has been studied as a function of temperature. It is found that the rise time, the pulse height, the number of emitted photons, and the decay time are strong functions of temperature in the range 0 to 90°C. The increased number of photons are due to the increased thermal excitation. Thermal stimulation provides an inexpensive and simple method for the enhancement of the generation and availability of hydrated electrons, and on the other hand, is an indirect method for the study of color centers.
L'emission d'impulsions de photons recemment decrite, entre 400 et 600 nm, pendant la dissolution dans l'eau des „alkali halides” irradies (par rayons γ) a ete etudie comme une fonction de la temperature. Il a ete trouve que le temps de montee, la hauteur de l'impulsion, le nombre des photons emis, et le temps de descente sont une foule fonction de la temperature entre 0 et 90°C. Le nombre croissant des photons est dǔ a l'accroissement de l'agitation thermique. La stimulation thermique est un moyen simple et peu depensier de produire des electrons hydrates. Par contre, c'est une methode indirecte pour etudier les centres de couleur.
1 citations