Referate

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Eine Methode zur spektrometrischen Analyse des Thoriums und einiger Seltener Erden (Ce, La, Pr, Nd) in Magnesiumlegierungen

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Die ?nderung der Brennerh?he in Flammenphotometern

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Die Wirksamkeit von Drehbandkolonnen

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The hall effect of amorphous-non transition metals

The amorphous metals Bi, Ga, Sn and Pb are obtained by quenched condensation. Their Hall effect is measured and compared with the model of free electrons. For Ga and Sn we find a good agreement with the free electron model. However, the Hall coefficient of Bi and Pb is only half as large as the theoretical value. This is particularly surprising because the corresponding liquids agree well with the free electron model and the amorphous state closely resembles the liquid. A trace effect of band structure may be responsible for the deviation.     

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Ger?t zur Differential-Thermoanalyse

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Buchbesprechungen

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Measurement of the Coulomb-capture ratio of muons in binary solid solutions of metals

The Coulomb-capture ratios of muons in the metallic solid solutions Au-Ag, Te-Se, Cd-Mg, Nb-V, and Cu-Ni have been measured via the muonic Lyman series intensities. In the case of Nb-V, targets of three stoichiometric ratios were investigated. The results do not agree with the per-atom ratiosA(Z/Z′) assumed to be equal toZ/Z′ (“Fermi-Teller law”) or (Z/Z′)^7/6. They are better, but also not in general well, reproduced byA(Z/Z′)=Z ^1/3 ln(0.57Z)/[(Z′)^1/3 ln(0.57 Z′)], deviations occuring in cases of different metallic radii.