Abstract
The sublimation of praseodymium tribromide under Knudsen and Langmuir conditions was studied by high-temperature mass spectrometry over the temperature range 804–957 K. During sublimation from the open surface of a single crystal, the sublimation coefficient of PrBr3 changed abruptly at the polymorphic transition point (UCl3-type low-temperature polymorph-PuBr3-type high-temperature polymorph, T= 934 ± 3 K). The change was reproducible in the heating-cooling cycles.
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Original Russian Text © M.F. Butman, V.B. Motalov, L.S. Kudin, A.S. Kryuchkov, A.E. Grishin, K.W. Krämer, 2008, published in Zhurnal Fizicheskoi Khimii, 2008, Vol. 82, No. 11, pp. 2190–2192.
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Butman, M.F., Motalov, V.B., Kudin, L.S. et al. A jump change in the sublimation coefficient of the PrBr3 single crystal at the polymophic transition point. Russ. J. Phys. Chem. 82, 1972–1974 (2008). https://doi.org/10.1134/S0036024408110332
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DOI: https://doi.org/10.1134/S0036024408110332