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It is experimentally shown that the breakdown voltage of high frequency discharges at very low pressures becomes identical with the initial voltage of secondary electron resonance mechanism (“multipacting”). This result is discussed by means of a formerly published theory of multipacting. Experimental results of other authors are also judged by comparing them with the predictions of this theory. 相似文献
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A modifiedCzochralski method for the growth of single crystals is described. This technique permits controlled doping of the crystal with easily volatile additives. The impurity distribution within the crystal is calculated. Analysis of crystal and remaining melt permits determination of the distribution coefficient. — Pure single crystals of KCl quite homogeneously doped with Tl in a range of molar concentration from 4.10?8?1.10?4 were grown by this method. Their Tl content was determined radiochemically to within 3%. The distribution coefficient was found to bek=0.31±10% throughout the range of concentration under investigation. It is shown that the effect of evaporation may not be neglected. 相似文献
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Zeitschrift für Physik A Hadrons and nuclei - Es wird auf Grund des Prinzips des vollständigen Gleichgewichts die relative Rolle der Zusammenstöße und der Wärmestrahlung... 相似文献
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