Yu. Yu. Tsiovkin, A. A. Povzner, L. Yu. Tsiovkina, L. R. Kabirova, A. R. Dyachenko, V. B. Bystrushkin, M. V. Ryabukhina, V. V. Dremov, “Temperature and concentration dependences of the plutonium-americium alloy resistivity at high temperatures”, Zhurnal Tekhnicheskoi Fiziki, 2010, Volume 80, Issue 11,Pages <nobr>149

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Temperature and concentration dependences of the plutonium-americium alloy resistivity at high temperatures

Yu. Yu. Tsiovkin^a, A. A. Povzner^a, L. Yu. Tsiovkina^a, L. R. Kabirova^a, A. R. Dyachenko^a, V. B. Bystrushkin^a, M. V. Ryabukhina^a, V. V. Dremov^b

^a Ural State Technical University, Ekaterinburg
^b Russian Federal Nuclear Center E. I. Zababakhin All-Russian Scientific Research Institute of Technical Physics, Snezhinsk

Abstract: A many-band model of conductivity is stated in terms of which it is shown qualitatively and quantitatively that interference scattering of conduction electrons may be the main reason for the negative temperature coefficient of resistance in actinide alloys at high temperatures $(T>\Theta_{\mathrm{D}})$. The temperature run of the resistivity in such alloys is completely determined by the balance between coherent and incoherent contributions to electron-impurity-phonon scattering. The model is used to analyze the concentration and temperature dependences of the plutonium and americium alloy resistivity.

Received: 31.03.2010