Vibrational properties of uranium fluorides
نویسندگان
چکیده
منابع مشابه
Oxidative ammonolysis of uranium(IV) fluorides to uranium(VI) nitride
Actinide nitrides, in particular UN, are being considered as fuel types for advanced reactor systems. Here, we demonstrate a low-temperature synthesis route on uranium that could be developed into a commercial fabrication process for UN and mixed actinide nitride fuels. UN was successfully synthesized from UO2 by first reacting with NH4HF2 in a ball mill at 20 C to form tetravalent ammonium ura...
متن کاملTheoretical Study of the Structure and Reactions of Uranium Fluorides
Uranium is an actinide metal mostly known for its use as fuel at nuclear power plants. Once the amount of fissile isotope (U) in nature is not enough for a chain reaction, uranium must be enriched in order to achieve roughly 4% of the 235 isotope. Therefore, it is converted into UF6, a gaseous compound, which can be used in isotope separation techniques (being centrifugation the most used and l...
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Energy Transfer About the time this issue of Los Alamos Science was going to press, we obtained new experimental results on atomic vibrations in uranium. These results help answer questions raised when Andrew Lawson and coworkers of Los Alamos rediscovered vibrational softening in the early 1990s. Although softening had been observed at least three times earlier, the most important questions ab...
متن کاملVibrational Properties of Bismutine, BiH3
Bismutine, BiH3, is the least stable of the group15 trihydrides. F. Paneth first detected it in minute traces in 1918 using a radiochemical technique involving Bi2Mg3 [1]. The best preparation method seems to be the one proposed by Amberger in 1961, based on the disproportionation of CH3BiH2 at −45 ◦C[̃2]. This relatively complex synthesis has recently been successfully reproduced and allowed to...
متن کاملVibrational Properties of Tellurium Tetrachloride
Z. Naturforsch. 60a, 408 – 410 (2005); received March 2, 2005 On the basis of the most recently reported spectroscopic data on vibrational modes in TeCl4 and structural parameters of TeCl4, an estimation of its main force constants complemented with the calculation of mean amplitudes of vibration in a wide temperature range have been performed. Also thermodynamic functions for the ideal gaseous...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 2019
ISSN: 0921-4526
DOI: 10.1016/j.physb.2019.06.049