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Syntheses of neptunium trichloride and measurements of its melting temperature

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Volume
440
Identifiers
DOI: 10.1016/j.jnucmat.2013.01.316

Abstract

Abstract Neptunium trichloride (NpCl3) of high purity was synthesized by the solid state reaction of neptunium nitride with cadmium chloride. Lattice parameters of hexagonal NpCl3 were determined from the powder X-ray diffraction pattern to be a=0.7428±0.0001nm and c=0.4262±0.0003nm, which fairly agree with the reported values. The melting temperature of NpCl3 was measured on a sample of about 1mg, hermetically encapsulated in a gold crucible with a differential thermal analyzer. The value determined was 1070±3K which is close to the recommended value (1075±30K) derived from the mean value of the melting temperature of UCl3 and of PuCl3.

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